Home / 42,073.96-63,110.92-12,491.78

Finding the Fourth Proportional to 42,073.96, 63,110.92 and 12,491.78

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Solution

The fourth proportional to 42,073.96, 63,110.92 and 12,491.78 is: 18,737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,073.96 : 63,110.92 = 12,491.78 : x
  2. Step 2: Convert to fraction form
    42,073.96/63,110.92 = 12,491.78/x
  3. Step 3: Cross multiply
    42,073.96x = 63,110.92 × 12,491.78
  4. Step 4: Simplify right side
    42,073.96x = 788,367,728.24
  5. Step 5: Solve for x
    x = 788,367,728.24/42,073.96
  6. Step 6: Final answer
    x = 18,737.66

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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.