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Finding the Fourth Proportional to 71,488.96, 98,656.68 and 39,225.04

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Solution

The fourth proportional to 71,488.96, 98,656.68 and 39,225.04 is: 54,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,488.96 : 98,656.68 = 39,225.04 : x
  2. Step 2: Convert to fraction form
    71,488.96/98,656.68 = 39,225.04/x
  3. Step 3: Cross multiply
    71,488.96x = 98,656.68 × 39,225.04
  4. Step 4: Simplify right side
    71,488.96x = 3,869,812,219.27
  5. Step 5: Solve for x
    x = 3,869,812,219.27/71,488.96
  6. Step 6: Final answer
    x = 54,131.61

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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.