Home / 72,578,366.90-108,867,550.35-66,783,691.70

Finding the Fourth Proportional to 72,578,366.90, 108,867,550.35 and 66,783,691.70

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Solution

The fourth proportional to 72,578,366.90, 108,867,550.35 and 66,783,691.70 is: 100,175,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,578,366.90 : 108,867,550.35 = 66,783,691.70 : x
  2. Step 2: Convert to fraction form
    72,578,366.90/108,867,550.35 = 66,783,691.70/x
  3. Step 3: Cross multiply
    72,578,366.90x = 108,867,550.35 × 66,783,691.70
  4. Step 4: Simplify right side
    72,578,366.90x = 7,270,576,918,708,627
  5. Step 5: Solve for x
    x = 7,270,576,918,708,627/72,578,366.90
  6. Step 6: Final answer
    x = 100,175,537.55

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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.