Home / 72,073,326.46-108,128,417.97-20,955,345.31

Finding the Fourth Proportional to 72,073,326.46, 108,128,417.97 and 20,955,345.31

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Solution

The fourth proportional to 72,073,326.46, 108,128,417.97 and 20,955,345.31 is: 31,438,375.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073,326.46 : 108,128,417.97 = 20,955,345.31 : x
  2. Step 2: Convert to fraction form
    72,073,326.46/108,128,417.97 = 20,955,345.31/x
  3. Step 3: Cross multiply
    72,073,326.46x = 108,128,417.97 × 20,955,345.31
  4. Step 4: Simplify right side
    72,073,326.46x = 2,265,868,336,385,359
  5. Step 5: Solve for x
    x = 2,265,868,336,385,359/72,073,326.46
  6. Step 6: Final answer
    x = 31,438,375.99

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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.