Home / 72,207.99-99,646.20-40,376.61

Finding the Fourth Proportional to 72,207.99, 99,646.20 and 40,376.61

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Solution

The fourth proportional to 72,207.99, 99,646.20 and 40,376.61 is: 55,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.99 : 99,646.20 = 40,376.61 : x
  2. Step 2: Convert to fraction form
    72,207.99/99,646.20 = 40,376.61/x
  3. Step 3: Cross multiply
    72,207.99x = 99,646.20 × 40,376.61
  4. Step 4: Simplify right side
    72,207.99x = 4,023,375,755.38
  5. Step 5: Solve for x
    x = 4,023,375,755.38/72,207.99
  6. Step 6: Final answer
    x = 55,719.26

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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.