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Finding the Fourth Proportional to 71,061.96, 98,068.68 and 40,857.08

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Solution

The fourth proportional to 71,061.96, 98,068.68 and 40,857.08 is: 56,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,061.96 : 98,068.68 = 40,857.08 : x
  2. Step 2: Convert to fraction form
    71,061.96/98,068.68 = 40,857.08/x
  3. Step 3: Cross multiply
    71,061.96x = 98,068.68 × 40,857.08
  4. Step 4: Simplify right side
    71,061.96x = 4,006,799,904.25
  5. Step 5: Solve for x
    x = 4,006,799,904.25/71,061.96
  6. Step 6: Final answer
    x = 56,384.60

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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.