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Finding the Fourth Proportional to 71,019.72, 97,965.90 and 45,517.02

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Solution

The fourth proportional to 71,019.72, 97,965.90 and 45,517.02 is: 62,787.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.72 : 97,965.90 = 45,517.02 : x
  2. Step 2: Convert to fraction form
    71,019.72/97,965.90 = 45,517.02/x
  3. Step 3: Cross multiply
    71,019.72x = 97,965.90 × 45,517.02
  4. Step 4: Simplify right side
    71,019.72x = 4,459,115,829.62
  5. Step 5: Solve for x
    x = 4,459,115,829.62/71,019.72
  6. Step 6: Final answer
    x = 62,787.01

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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.