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Finding the Fourth Proportional to 64,488,245.80, 96,732,368.70 and 38,979,077.80

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Solution

The fourth proportional to 64,488,245.80, 96,732,368.70 and 38,979,077.80 is: 58,468,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,488,245.80 : 96,732,368.70 = 38,979,077.80 : x
  2. Step 2: Convert to fraction form
    64,488,245.80/96,732,368.70 = 38,979,077.80/x
  3. Step 3: Cross multiply
    64,488,245.80x = 96,732,368.70 × 38,979,077.80
  4. Step 4: Simplify right side
    64,488,245.80x = 3,770,538,525,335,584.50
  5. Step 5: Solve for x
    x = 3,770,538,525,335,584.50/64,488,245.80
  6. Step 6: Final answer
    x = 58,468,616.70

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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.