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Finding the Fourth Proportional to 72,302.40, 108,456.96 and 25,560

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Solution

The fourth proportional to 72,302.40, 108,456.96 and 25,560 is: 38,341.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,302.40 : 108,456.96 = 25,560 : x
  2. Step 2: Convert to fraction form
    72,302.40/108,456.96 = 25,560/x
  3. Step 3: Cross multiply
    72,302.40x = 108,456.96 × 25,560
  4. Step 4: Simplify right side
    72,302.40x = 2,772,159,897.60
  5. Step 5: Solve for x
    x = 2,772,159,897.60/72,302.40
  6. Step 6: Final answer
    x = 38,341.19

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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.