Home / 72,336,620.10-108,504,930.15-21,223,805.70

Finding the Fourth Proportional to 72,336,620.10, 108,504,930.15 and 21,223,805.70

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Solution

The fourth proportional to 72,336,620.10, 108,504,930.15 and 21,223,805.70 is: 31,835,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,336,620.10 : 108,504,930.15 = 21,223,805.70 : x
  2. Step 2: Convert to fraction form
    72,336,620.10/108,504,930.15 = 21,223,805.70/x
  3. Step 3: Cross multiply
    72,336,620.10x = 108,504,930.15 × 21,223,805.70
  4. Step 4: Simplify right side
    72,336,620.10x = 2,302,887,554,995,672
  5. Step 5: Solve for x
    x = 2,302,887,554,995,672/72,336,620.10
  6. Step 6: Final answer
    x = 31,835,708.55

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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.