Home / 55,928.52-77,178.15-30,778.02

Finding the Fourth Proportional to 55,928.52, 77,178.15 and 30,778.02

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Solution

The fourth proportional to 55,928.52, 77,178.15 and 30,778.02 is: 42,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,928.52 : 77,178.15 = 30,778.02 : x
  2. Step 2: Convert to fraction form
    55,928.52/77,178.15 = 30,778.02/x
  3. Step 3: Cross multiply
    55,928.52x = 77,178.15 × 30,778.02
  4. Step 4: Simplify right side
    55,928.52x = 2,375,390,644.26
  5. Step 5: Solve for x
    x = 2,375,390,644.26/55,928.52
  6. Step 6: Final answer
    x = 42,471.90

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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.