Home / 42,077.20-63,125.68-12,495.28

Finding the Fourth Proportional to 42,077.20, 63,125.68 and 12,495.28

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Solution

The fourth proportional to 42,077.20, 63,125.68 and 12,495.28 is: 18,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,077.20 : 63,125.68 = 12,495.28 : x
  2. Step 2: Convert to fraction form
    42,077.20/63,125.68 = 12,495.28/x
  3. Step 3: Cross multiply
    42,077.20x = 63,125.68 × 12,495.28
  4. Step 4: Simplify right side
    42,077.20x = 788,773,046.79
  5. Step 5: Solve for x
    x = 788,773,046.79/42,077.20
  6. Step 6: Final answer
    x = 18,745.85

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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.