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Finding the Fourth Proportional to 60,478.60, 90,717.90 and 43,760.20

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Solution

The fourth proportional to 60,478.60, 90,717.90 and 43,760.20 is: 65,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,478.60 : 90,717.90 = 43,760.20 : x
  2. Step 2: Convert to fraction form
    60,478.60/90,717.90 = 43,760.20/x
  3. Step 3: Cross multiply
    60,478.60x = 90,717.90 × 43,760.20
  4. Step 4: Simplify right side
    60,478.60x = 3,969,833,447.58
  5. Step 5: Solve for x
    x = 3,969,833,447.58/60,478.60
  6. Step 6: Final answer
    x = 65,640.30

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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.