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Finding the Fourth Proportional to 71,307.74, 98,373.78 and 42,997.70

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Solution

The fourth proportional to 71,307.74, 98,373.78 and 42,997.70 is: 59,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,307.74 : 98,373.78 = 42,997.70 : x
  2. Step 2: Convert to fraction form
    71,307.74/98,373.78 = 42,997.70/x
  3. Step 3: Cross multiply
    71,307.74x = 98,373.78 × 42,997.70
  4. Step 4: Simplify right side
    71,307.74x = 4,229,846,280.31
  5. Step 5: Solve for x
    x = 4,229,846,280.31/71,307.74
  6. Step 6: Final answer
    x = 59,318.19

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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.