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Finding the Fourth Proportional to 60,390.60, 90,542.12 and 30,423.28

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Solution

The fourth proportional to 60,390.60, 90,542.12 and 30,423.28 is: 45,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.60 : 90,542.12 = 30,423.28 : x
  2. Step 2: Convert to fraction form
    60,390.60/90,542.12 = 30,423.28/x
  3. Step 3: Cross multiply
    60,390.60x = 90,542.12 × 30,423.28
  4. Step 4: Simplify right side
    60,390.60x = 2,754,588,268.55
  5. Step 5: Solve for x
    x = 2,754,588,268.55/60,390.60
  6. Step 6: Final answer
    x = 45,612.86

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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.