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Finding the Fourth Proportional to 40,266.70, 60,400.05 and 28,456.90

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Solution

The fourth proportional to 40,266.70, 60,400.05 and 28,456.90 is: 42,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,266.70 : 60,400.05 = 28,456.90 : x
  2. Step 2: Convert to fraction form
    40,266.70/60,400.05 = 28,456.90/x
  3. Step 3: Cross multiply
    40,266.70x = 60,400.05 × 28,456.90
  4. Step 4: Simplify right side
    40,266.70x = 1,718,798,182.85
  5. Step 5: Solve for x
    x = 1,718,798,182.85/40,266.70
  6. Step 6: Final answer
    x = 42,685.35

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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.