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Finding the Fourth Proportional to 72,556.47, 108,862.65 and 28,214.46

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Solution

The fourth proportional to 72,556.47, 108,862.65 and 28,214.46 is: 42,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.47 : 108,862.65 = 28,214.46 : x
  2. Step 2: Convert to fraction form
    72,556.47/108,862.65 = 28,214.46/x
  3. Step 3: Cross multiply
    72,556.47x = 108,862.65 × 28,214.46
  4. Step 4: Simplify right side
    72,556.47x = 3,071,500,883.92
  5. Step 5: Solve for x
    x = 3,071,500,883.92/72,556.47
  6. Step 6: Final answer
    x = 42,332.56

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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.