Home / 85,943.40-128,915.10-36,010.14

Finding the Fourth Proportional to 85,943.40, 128,915.10 and 36,010.14

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Solution

The fourth proportional to 85,943.40, 128,915.10 and 36,010.14 is: 54,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,943.40 : 128,915.10 = 36,010.14 : x
  2. Step 2: Convert to fraction form
    85,943.40/128,915.10 = 36,010.14/x
  3. Step 3: Cross multiply
    85,943.40x = 128,915.10 × 36,010.14
  4. Step 4: Simplify right side
    85,943.40x = 4,642,250,799.11
  5. Step 5: Solve for x
    x = 4,642,250,799.11/85,943.40
  6. Step 6: Final answer
    x = 54,015.21

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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.