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Finding the Fourth Proportional to 79,835,796.80, 119,753,695.20 and 76,700,513.60

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Solution

The fourth proportional to 79,835,796.80, 119,753,695.20 and 76,700,513.60 is: 115,050,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,835,796.80 : 119,753,695.20 = 76,700,513.60 : x
  2. Step 2: Convert to fraction form
    79,835,796.80/119,753,695.20 = 76,700,513.60/x
  3. Step 3: Cross multiply
    79,835,796.80x = 119,753,695.20 × 76,700,513.60
  4. Step 4: Simplify right side
    79,835,796.80x = 9,185,169,927,337,854
  5. Step 5: Solve for x
    x = 9,185,169,927,337,854/79,835,796.80
  6. Step 6: Final answer
    x = 115,050,770.40

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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.