Home / 72,439.40-108,659.10-44,445.80

Finding the Fourth Proportional to 72,439.40, 108,659.10 and 44,445.80

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Solution

The fourth proportional to 72,439.40, 108,659.10 and 44,445.80 is: 66,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.40 : 108,659.10 = 44,445.80 : x
  2. Step 2: Convert to fraction form
    72,439.40/108,659.10 = 44,445.80/x
  3. Step 3: Cross multiply
    72,439.40x = 108,659.10 × 44,445.80
  4. Step 4: Simplify right side
    72,439.40x = 4,829,440,626.78
  5. Step 5: Solve for x
    x = 4,829,440,626.78/72,439.40
  6. Step 6: Final answer
    x = 66,668.70

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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.