Home / 78,002,830.38-107,643,808.80-43,195,478.79

Finding the Fourth Proportional to 78,002,830.38, 107,643,808.80 and 43,195,478.79

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Solution

The fourth proportional to 78,002,830.38, 107,643,808.80 and 43,195,478.79 is: 59,609,706.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002,830.38 : 107,643,808.80 = 43,195,478.79 : x
  2. Step 2: Convert to fraction form
    78,002,830.38/107,643,808.80 = 43,195,478.79/x
  3. Step 3: Cross multiply
    78,002,830.38x = 107,643,808.80 × 43,195,478.79
  4. Step 4: Simplify right side
    78,002,830.38x = 4,649,725,859,895,215
  5. Step 5: Solve for x
    x = 4,649,725,859,895,215/78,002,830.38
  6. Step 6: Final answer
    x = 59,609,706.95

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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.