Home / 55,929.18-77,182.22-30,778.68

Finding the Fourth Proportional to 55,929.18, 77,182.22 and 30,778.68

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Solution

The fourth proportional to 55,929.18, 77,182.22 and 30,778.68 is: 42,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,929.18 : 77,182.22 = 30,778.68 : x
  2. Step 2: Convert to fraction form
    55,929.18/77,182.22 = 30,778.68/x
  3. Step 3: Cross multiply
    55,929.18x = 77,182.22 × 30,778.68
  4. Step 4: Simplify right side
    55,929.18x = 2,375,566,851.07
  5. Step 5: Solve for x
    x = 2,375,566,851.07/55,929.18
  6. Step 6: Final answer
    x = 42,474.55

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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.