Home / 42,102.18-63,148.41-10,939.86

Finding the Fourth Proportional to 42,102.18, 63,148.41 and 10,939.86

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Solution

The fourth proportional to 42,102.18, 63,148.41 and 10,939.86 is: 16,408.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,102.18 : 63,148.41 = 10,939.86 : x
  2. Step 2: Convert to fraction form
    42,102.18/63,148.41 = 10,939.86/x
  3. Step 3: Cross multiply
    42,102.18x = 63,148.41 × 10,939.86
  4. Step 4: Simplify right side
    42,102.18x = 690,834,764.62
  5. Step 5: Solve for x
    x = 690,834,764.62/42,102.18
  6. Step 6: Final answer
    x = 16,408.53

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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.