Home / 55,680.80-83,521.20-40,918.55

Finding the Fourth Proportional to 55,680.80, 83,521.20 and 40,918.55

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Solution

The fourth proportional to 55,680.80, 83,521.20 and 40,918.55 is: 61,377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,680.80 : 83,521.20 = 40,918.55 : x
  2. Step 2: Convert to fraction form
    55,680.80/83,521.20 = 40,918.55/x
  3. Step 3: Cross multiply
    55,680.80x = 83,521.20 × 40,918.55
  4. Step 4: Simplify right side
    55,680.80x = 3,417,566,398.26
  5. Step 5: Solve for x
    x = 3,417,566,398.26/55,680.80
  6. Step 6: Final answer
    x = 61,377.83

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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.