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Finding the Fourth Proportional to 72,948.71, 109,423.06 and 56,332.97

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Solution

The fourth proportional to 72,948.71, 109,423.06 and 56,332.97 is: 84,499.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.71 : 109,423.06 = 56,332.97 : x
  2. Step 2: Convert to fraction form
    72,948.71/109,423.06 = 56,332.97/x
  3. Step 3: Cross multiply
    72,948.71x = 109,423.06 × 56,332.97
  4. Step 4: Simplify right side
    72,948.71x = 6,164,126,370.68
  5. Step 5: Solve for x
    x = 6,164,126,370.68/72,948.71
  6. Step 6: Final answer
    x = 84,499.46

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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.