Home / 72,091.20-99,439.20-43,397.76

Finding the Fourth Proportional to 72,091.20, 99,439.20 and 43,397.76

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Solution

The fourth proportional to 72,091.20, 99,439.20 and 43,397.76 is: 59,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,091.20 : 99,439.20 = 43,397.76 : x
  2. Step 2: Convert to fraction form
    72,091.20/99,439.20 = 43,397.76/x
  3. Step 3: Cross multiply
    72,091.20x = 99,439.20 × 43,397.76
  4. Step 4: Simplify right side
    72,091.20x = 4,315,438,536.19
  5. Step 5: Solve for x
    x = 4,315,438,536.19/72,091.20
  6. Step 6: Final answer
    x = 59,860.82

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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.