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Finding the Fourth Proportional to 73,089.96, 100,864.58 and 40,385.32

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Solution

The fourth proportional to 73,089.96, 100,864.58 and 40,385.32 is: 55,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,089.96 : 100,864.58 = 40,385.32 : x
  2. Step 2: Convert to fraction form
    73,089.96/100,864.58 = 40,385.32/x
  3. Step 3: Cross multiply
    73,089.96x = 100,864.58 × 40,385.32
  4. Step 4: Simplify right side
    73,089.96x = 4,073,448,339.97
  5. Step 5: Solve for x
    x = 4,073,448,339.97/73,089.96
  6. Step 6: Final answer
    x = 55,731.98

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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.