Home / 71,748,046.25-99,015,439.30-40,388,118.80

Finding the Fourth Proportional to 71,748,046.25, 99,015,439.30 and 40,388,118.80

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Solution

The fourth proportional to 71,748,046.25, 99,015,439.30 and 40,388,118.80 is: 55,737,368.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748,046.25 : 99,015,439.30 = 40,388,118.80 : x
  2. Step 2: Convert to fraction form
    71,748,046.25/99,015,439.30 = 40,388,118.80/x
  3. Step 3: Cross multiply
    71,748,046.25x = 99,015,439.30 × 40,388,118.80
  4. Step 4: Simplify right side
    71,748,046.25x = 3,999,047,324,987,511.50
  5. Step 5: Solve for x
    x = 3,999,047,324,987,511.50/71,748,046.25
  6. Step 6: Final answer
    x = 55,737,368.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.