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Finding the Fourth Proportional to 72,003.40, 108,134.70 and 52,304.20

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Solution

The fourth proportional to 72,003.40, 108,134.70 and 52,304.20 is: 78,550.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.40 : 108,134.70 = 52,304.20 : x
  2. Step 2: Convert to fraction form
    72,003.40/108,134.70 = 52,304.20/x
  3. Step 3: Cross multiply
    72,003.40x = 108,134.70 × 52,304.20
  4. Step 4: Simplify right side
    72,003.40x = 5,655,898,975.74
  5. Step 5: Solve for x
    x = 5,655,898,975.74/72,003.40
  6. Step 6: Final answer
    x = 78,550.44

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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.