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Finding the Fourth Proportional to 76,979,488.80, 115,469,233.20 and 23,119,802.40

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Solution

The fourth proportional to 76,979,488.80, 115,469,233.20 and 23,119,802.40 is: 34,679,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,979,488.80 : 115,469,233.20 = 23,119,802.40 : x
  2. Step 2: Convert to fraction form
    76,979,488.80/115,469,233.20 = 23,119,802.40/x
  3. Step 3: Cross multiply
    76,979,488.80x = 115,469,233.20 × 23,119,802.40
  4. Step 4: Simplify right side
    76,979,488.80x = 2,669,625,854,863,519.50
  5. Step 5: Solve for x
    x = 2,669,625,854,863,519.50/76,979,488.80
  6. Step 6: Final answer
    x = 34,679,703.60

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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.