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Finding the Fourth Proportional to 43,148,978.70, 64,723,468.05 and 38,446,053.90

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Solution

The fourth proportional to 43,148,978.70, 64,723,468.05 and 38,446,053.90 is: 57,669,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,148,978.70 : 64,723,468.05 = 38,446,053.90 : x
  2. Step 2: Convert to fraction form
    43,148,978.70/64,723,468.05 = 38,446,053.90/x
  3. Step 3: Cross multiply
    43,148,978.70x = 64,723,468.05 × 38,446,053.90
  4. Step 4: Simplify right side
    43,148,978.70x = 2,488,361,941,245,227.50
  5. Step 5: Solve for x
    x = 2,488,361,941,245,227.50/43,148,978.70
  6. Step 6: Final answer
    x = 57,669,080.85

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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.