Home / 72,213.60-99,654.90-40,383.02

Finding the Fourth Proportional to 72,213.60, 99,654.90 and 40,383.02

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Solution

The fourth proportional to 72,213.60, 99,654.90 and 40,383.02 is: 55,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.60 : 99,654.90 = 40,383.02 : x
  2. Step 2: Convert to fraction form
    72,213.60/99,654.90 = 40,383.02/x
  3. Step 3: Cross multiply
    72,213.60x = 99,654.90 × 40,383.02
  4. Step 4: Simplify right side
    72,213.60x = 4,024,365,819.80
  5. Step 5: Solve for x
    x = 4,024,365,819.80/72,213.60
  6. Step 6: Final answer
    x = 55,728.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.