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Finding the Fourth Proportional to 71,045.60, 106,827.60 and 59,640.80

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Solution

The fourth proportional to 71,045.60, 106,827.60 and 59,640.80 is: 89,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,045.60 : 106,827.60 = 59,640.80 : x
  2. Step 2: Convert to fraction form
    71,045.60/106,827.60 = 59,640.80/x
  3. Step 3: Cross multiply
    71,045.60x = 106,827.60 × 59,640.80
  4. Step 4: Simplify right side
    71,045.60x = 6,371,283,526.08
  5. Step 5: Solve for x
    x = 6,371,283,526.08/71,045.60
  6. Step 6: Final answer
    x = 89,678.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.