Home / 75,115.16-103,670.52-42,849.92

Finding the Fourth Proportional to 75,115.16, 103,670.52 and 42,849.92

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Solution

The fourth proportional to 75,115.16, 103,670.52 and 42,849.92 is: 59,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,115.16 : 103,670.52 = 42,849.92 : x
  2. Step 2: Convert to fraction form
    75,115.16/103,670.52 = 42,849.92/x
  3. Step 3: Cross multiply
    75,115.16x = 103,670.52 × 42,849.92
  4. Step 4: Simplify right side
    75,115.16x = 4,442,273,488.36
  5. Step 5: Solve for x
    x = 4,442,273,488.36/75,115.16
  6. Step 6: Final answer
    x = 59,139.51

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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.