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Finding the Fourth Proportional to 72,489.60, 108,604.80 and 59,270.40

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Solution

The fourth proportional to 72,489.60, 108,604.80 and 59,270.40 is: 88,799.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,489.60 : 108,604.80 = 59,270.40 : x
  2. Step 2: Convert to fraction form
    72,489.60/108,604.80 = 59,270.40/x
  3. Step 3: Cross multiply
    72,489.60x = 108,604.80 × 59,270.40
  4. Step 4: Simplify right side
    72,489.60x = 6,437,049,937.92
  5. Step 5: Solve for x
    x = 6,437,049,937.92/72,489.60
  6. Step 6: Final answer
    x = 88,799.63

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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.