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Finding the Fourth Proportional to 79,730,743.80, 119,596,115.70 and 68,251,618.20

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Solution

The fourth proportional to 79,730,743.80, 119,596,115.70 and 68,251,618.20 is: 102,377,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,730,743.80 : 119,596,115.70 = 68,251,618.20 : x
  2. Step 2: Convert to fraction form
    79,730,743.80/119,596,115.70 = 68,251,618.20/x
  3. Step 3: Cross multiply
    79,730,743.80x = 119,596,115.70 × 68,251,618.20
  4. Step 4: Simplify right side
    79,730,743.80x = 8,162,628,426,959,426
  5. Step 5: Solve for x
    x = 8,162,628,426,959,426/79,730,743.80
  6. Step 6: Final answer
    x = 102,377,427.30

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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.