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Finding the Fourth Proportional to 40,601.70, 60,902.55 and 28,135.80

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Solution

The fourth proportional to 40,601.70, 60,902.55 and 28,135.80 is: 42,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,601.70 : 60,902.55 = 28,135.80 : x
  2. Step 2: Convert to fraction form
    40,601.70/60,902.55 = 28,135.80/x
  3. Step 3: Cross multiply
    40,601.70x = 60,902.55 × 28,135.80
  4. Step 4: Simplify right side
    40,601.70x = 1,713,541,966.29
  5. Step 5: Solve for x
    x = 1,713,541,966.29/40,601.70
  6. Step 6: Final answer
    x = 42,203.70

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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.