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Finding the Fourth Proportional to 40,285.80, 60,428.70 and 22,789.80

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Solution

The fourth proportional to 40,285.80, 60,428.70 and 22,789.80 is: 34,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,285.80 : 60,428.70 = 22,789.80 : x
  2. Step 2: Convert to fraction form
    40,285.80/60,428.70 = 22,789.80/x
  3. Step 3: Cross multiply
    40,285.80x = 60,428.70 × 22,789.80
  4. Step 4: Simplify right side
    40,285.80x = 1,377,157,987.26
  5. Step 5: Solve for x
    x = 1,377,157,987.26/40,285.80
  6. Step 6: Final answer
    x = 34,184.70

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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.