Home / 85,963,152.40-128,944,728.60-42,916,431.40

Finding the Fourth Proportional to 85,963,152.40, 128,944,728.60 and 42,916,431.40

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Solution

The fourth proportional to 85,963,152.40, 128,944,728.60 and 42,916,431.40 is: 64,374,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963,152.40 : 128,944,728.60 = 42,916,431.40 : x
  2. Step 2: Convert to fraction form
    85,963,152.40/128,944,728.60 = 42,916,431.40/x
  3. Step 3: Cross multiply
    85,963,152.40x = 128,944,728.60 × 42,916,431.40
  4. Step 4: Simplify right side
    85,963,152.40x = 5,533,847,599,353,518
  5. Step 5: Solve for x
    x = 5,533,847,599,353,518/85,963,152.40
  6. Step 6: Final answer
    x = 64,374,647.10

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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.