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Finding the Fourth Proportional to 88,117.92, 121,600.80 and 47,831.76

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Solution

The fourth proportional to 88,117.92, 121,600.80 and 47,831.76 is: 66,006.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,117.92 : 121,600.80 = 47,831.76 : x
  2. Step 2: Convert to fraction form
    88,117.92/121,600.80 = 47,831.76/x
  3. Step 3: Cross multiply
    88,117.92x = 121,600.80 × 47,831.76
  4. Step 4: Simplify right side
    88,117.92x = 5,816,380,281.41
  5. Step 5: Solve for x
    x = 5,816,380,281.41/88,117.92
  6. Step 6: Final answer
    x = 66,006.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.