Home / 72,219.89-108,376.61-38,962.91

Finding the Fourth Proportional to 72,219.89, 108,376.61 and 38,962.91

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Solution

The fourth proportional to 72,219.89, 108,376.61 and 38,962.91 is: 58,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,219.89 : 108,376.61 = 38,962.91 : x
  2. Step 2: Convert to fraction form
    72,219.89/108,376.61 = 38,962.91/x
  3. Step 3: Cross multiply
    72,219.89x = 108,376.61 × 38,962.91
  4. Step 4: Simplify right side
    72,219.89x = 4,222,668,101.54
  5. Step 5: Solve for x
    x = 4,222,668,101.54/72,219.89
  6. Step 6: Final answer
    x = 58,469.60

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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.