Home / 55,932.40-77,186.72-30,781.92

Finding the Fourth Proportional to 55,932.40, 77,186.72 and 30,781.92

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Solution

The fourth proportional to 55,932.40, 77,186.72 and 30,781.92 is: 42,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,932.40 : 77,186.72 = 30,781.92 : x
  2. Step 2: Convert to fraction form
    55,932.40/77,186.72 = 30,781.92/x
  3. Step 3: Cross multiply
    55,932.40x = 77,186.72 × 30,781.92
  4. Step 4: Simplify right side
    55,932.40x = 2,375,955,440.10
  5. Step 5: Solve for x
    x = 2,375,955,440.10/55,932.40
  6. Step 6: Final answer
    x = 42,479.05

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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.