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Finding the Fourth Proportional to 72,447.60, 108,679.52 and 65,006.32

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Solution

The fourth proportional to 72,447.60, 108,679.52 and 65,006.32 is: 97,516.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447.60 : 108,679.52 = 65,006.32 : x
  2. Step 2: Convert to fraction form
    72,447.60/108,679.52 = 65,006.32/x
  3. Step 3: Cross multiply
    72,447.60x = 108,679.52 × 65,006.32
  4. Step 4: Simplify right side
    72,447.60x = 7,064,855,654.57
  5. Step 5: Solve for x
    x = 7,064,855,654.57/72,447.60
  6. Step 6: Final answer
    x = 97,516.77

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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.