Home / 81,987.62-113,143.28-46,178.22

Finding the Fourth Proportional to 81,987.62, 113,143.28 and 46,178.22

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Solution

The fourth proportional to 81,987.62, 113,143.28 and 46,178.22 is: 63,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,987.62 : 113,143.28 = 46,178.22 : x
  2. Step 2: Convert to fraction form
    81,987.62/113,143.28 = 46,178.22/x
  3. Step 3: Cross multiply
    81,987.62x = 113,143.28 × 46,178.22
  4. Step 4: Simplify right side
    81,987.62x = 5,224,755,044.47
  5. Step 5: Solve for x
    x = 5,224,755,044.47/81,987.62
  6. Step 6: Final answer
    x = 63,726.15

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1.5x scale

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.