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Finding the Fourth Proportional to 55,773.20, 83,659.80 and 51,280.40

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Solution

The fourth proportional to 55,773.20, 83,659.80 and 51,280.40 is: 76,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,773.20 : 83,659.80 = 51,280.40 : x
  2. Step 2: Convert to fraction form
    55,773.20/83,659.80 = 51,280.40/x
  3. Step 3: Cross multiply
    55,773.20x = 83,659.80 × 51,280.40
  4. Step 4: Simplify right side
    55,773.20x = 4,290,108,007.92
  5. Step 5: Solve for x
    x = 4,290,108,007.92/55,773.20
  6. Step 6: Final answer
    x = 76,920.60

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1.5x scale

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.