Home / 77,342.62-115,784.28-42,175.66

Finding the Fourth Proportional to 77,342.62, 115,784.28 and 42,175.66

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Solution

The fourth proportional to 77,342.62, 115,784.28 and 42,175.66 is: 63,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,342.62 : 115,784.28 = 42,175.66 : x
  2. Step 2: Convert to fraction form
    77,342.62/115,784.28 = 42,175.66/x
  3. Step 3: Cross multiply
    77,342.62x = 115,784.28 × 42,175.66
  4. Step 4: Simplify right side
    77,342.62x = 4,883,278,426.62
  5. Step 5: Solve for x
    x = 4,883,278,426.62/77,342.62
  6. Step 6: Final answer
    x = 63,138.26

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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.