Home / 80,943.33-111,702.40-45,135.66

Finding the Fourth Proportional to 80,943.33, 111,702.40 and 45,135.66

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Solution

The fourth proportional to 80,943.33, 111,702.40 and 45,135.66 is: 62,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,943.33 : 111,702.40 = 45,135.66 : x
  2. Step 2: Convert to fraction form
    80,943.33/111,702.40 = 45,135.66/x
  3. Step 3: Cross multiply
    80,943.33x = 111,702.40 × 45,135.66
  4. Step 4: Simplify right side
    80,943.33x = 5,041,761,434.74
  5. Step 5: Solve for x
    x = 5,041,761,434.74/80,943.33
  6. Step 6: Final answer
    x = 62,287.55

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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.