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Finding the Fourth Proportional to 73,002.35, 100,734.10 and 42,780.75

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Solution

The fourth proportional to 73,002.35, 100,734.10 and 42,780.75 is: 59,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,002.35 : 100,734.10 = 42,780.75 : x
  2. Step 2: Convert to fraction form
    73,002.35/100,734.10 = 42,780.75/x
  3. Step 3: Cross multiply
    73,002.35x = 100,734.10 × 42,780.75
  4. Step 4: Simplify right side
    73,002.35x = 4,309,479,863.87
  5. Step 5: Solve for x
    x = 4,309,479,863.87/73,002.35
  6. Step 6: Final answer
    x = 59,032.07

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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.