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Finding the Fourth Proportional to 72,948.47, 109,422.68 and 56,332.73

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Solution

The fourth proportional to 72,948.47, 109,422.68 and 56,332.73 is: 84,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.47 : 109,422.68 = 56,332.73 : x
  2. Step 2: Convert to fraction form
    72,948.47/109,422.68 = 56,332.73/x
  3. Step 3: Cross multiply
    72,948.47x = 109,422.68 × 56,332.73
  4. Step 4: Simplify right side
    72,948.47x = 6,164,077,459.54
  5. Step 5: Solve for x
    x = 6,164,077,459.54/72,948.47
  6. Step 6: Final answer
    x = 84,499.07

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1.5x scale

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.