Home / 72,287.64-99,755.35-40,020.38

Finding the Fourth Proportional to 72,287.64, 99,755.35 and 40,020.38

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Solution

The fourth proportional to 72,287.64, 99,755.35 and 40,020.38 is: 55,227.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,287.64 : 99,755.35 = 40,020.38 : x
  2. Step 2: Convert to fraction form
    72,287.64/99,755.35 = 40,020.38/x
  3. Step 3: Cross multiply
    72,287.64x = 99,755.35 × 40,020.38
  4. Step 4: Simplify right side
    72,287.64x = 3,992,246,789.29
  5. Step 5: Solve for x
    x = 3,992,246,789.29/72,287.64
  6. Step 6: Final answer
    x = 55,227.24

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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.