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Finding the Fourth Proportional to 88,218.79, 121,728.22 and 52,407.88

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Solution

The fourth proportional to 88,218.79, 121,728.22 and 52,407.88 is: 72,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,218.79 : 121,728.22 = 52,407.88 : x
  2. Step 2: Convert to fraction form
    88,218.79/121,728.22 = 52,407.88/x
  3. Step 3: Cross multiply
    88,218.79x = 121,728.22 × 52,407.88
  4. Step 4: Simplify right side
    88,218.79x = 6,379,517,946.37
  5. Step 5: Solve for x
    x = 6,379,517,946.37/88,218.79
  6. Step 6: Final answer
    x = 72,314.73

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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.