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Finding the Fourth Proportional to 72,488.60, 108,951.60 and 62,865.80

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Solution

The fourth proportional to 72,488.60, 108,951.60 and 62,865.80 is: 94,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,488.60 : 108,951.60 = 62,865.80 : x
  2. Step 2: Convert to fraction form
    72,488.60/108,951.60 = 62,865.80/x
  3. Step 3: Cross multiply
    72,488.60x = 108,951.60 × 62,865.80
  4. Step 4: Simplify right side
    72,488.60x = 6,849,329,495.28
  5. Step 5: Solve for x
    x = 6,849,329,495.28/72,488.60
  6. Step 6: Final answer
    x = 94,488.37

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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.