Home / 55,785.20-83,677.80-18,849.20

Finding the Fourth Proportional to 55,785.20, 83,677.80 and 18,849.20

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Solution

The fourth proportional to 55,785.20, 83,677.80 and 18,849.20 is: 28,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,785.20 : 83,677.80 = 18,849.20 : x
  2. Step 2: Convert to fraction form
    55,785.20/83,677.80 = 18,849.20/x
  3. Step 3: Cross multiply
    55,785.20x = 83,677.80 × 18,849.20
  4. Step 4: Simplify right side
    55,785.20x = 1,577,259,587.76
  5. Step 5: Solve for x
    x = 1,577,259,587.76/55,785.20
  6. Step 6: Final answer
    x = 28,273.80

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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.