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Finding the Fourth Proportional to 71,440.38, 98,583.87 and 39,607.38

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Solution

The fourth proportional to 71,440.38, 98,583.87 and 39,607.38 is: 54,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,440.38 : 98,583.87 = 39,607.38 : x
  2. Step 2: Convert to fraction form
    71,440.38/98,583.87 = 39,607.38/x
  3. Step 3: Cross multiply
    71,440.38x = 98,583.87 × 39,607.38
  4. Step 4: Simplify right side
    71,440.38x = 3,904,648,800.96
  5. Step 5: Solve for x
    x = 3,904,648,800.96/71,440.38
  6. Step 6: Final answer
    x = 54,656.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.