Home / 67,555.38-101,278.36-28,142

Finding the Fourth Proportional to 67,555.38, 101,278.36 and 28,142

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Solution

The fourth proportional to 67,555.38, 101,278.36 and 28,142 is: 42,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,555.38 : 101,278.36 = 28,142 : x
  2. Step 2: Convert to fraction form
    67,555.38/101,278.36 = 28,142/x
  3. Step 3: Cross multiply
    67,555.38x = 101,278.36 × 28,142
  4. Step 4: Simplify right side
    67,555.38x = 2,850,175,607.12
  5. Step 5: Solve for x
    x = 2,850,175,607.12/67,555.38
  6. Step 6: Final answer
    x = 42,190.21

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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.