Home / 85,391,998,869.90-128,062,210,130.32-25,684,811,110.50

Finding the Fourth Proportional to 85,391,998,869.90, 128,062,210,130.32 and 25,684,811,110.50

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Solution

The fourth proportional to 85,391,998,869.90, 128,062,210,130.32 and 25,684,811,110.50 is: 38,519,459,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,391,998,869.90 : 128,062,210,130.32 = 25,684,811,110.50 : x
  2. Step 2: Convert to fraction form
    85,391,998,869.90/128,062,210,130.32 = 25,684,811,110.50/x
  3. Step 3: Cross multiply
    85,391,998,869.90x = 128,062,210,130.32 × 25,684,811,110.50
  4. Step 4: Simplify right side
    85,391,998,869.90x = 3,289,253,677,590,428,778,496
  5. Step 5: Solve for x
    x = 3,289,253,677,590,428,778,496/85,391,998,869.90
  6. Step 6: Final answer
    x = 38,519,459,915.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.