Home / 81,543.78-112,521.42-45,726.39

Finding the Fourth Proportional to 81,543.78, 112,521.42 and 45,726.39

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Solution

The fourth proportional to 81,543.78, 112,521.42 and 45,726.39 is: 63,097.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.78 : 112,521.42 = 45,726.39 : x
  2. Step 2: Convert to fraction form
    81,543.78/112,521.42 = 45,726.39/x
  3. Step 3: Cross multiply
    81,543.78x = 112,521.42 × 45,726.39
  4. Step 4: Simplify right side
    81,543.78x = 5,145,198,334.27
  5. Step 5: Solve for x
    x = 5,145,198,334.27/81,543.78
  6. Step 6: Final answer
    x = 63,097.37

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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.