Home / 72,839,374.70-109,259,062.05-72,414,221.90

Finding the Fourth Proportional to 72,839,374.70, 109,259,062.05 and 72,414,221.90

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Solution

The fourth proportional to 72,839,374.70, 109,259,062.05 and 72,414,221.90 is: 108,621,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839,374.70 : 109,259,062.05 = 72,414,221.90 : x
  2. Step 2: Convert to fraction form
    72,839,374.70/109,259,062.05 = 72,414,221.90/x
  3. Step 3: Cross multiply
    72,839,374.70x = 109,259,062.05 × 72,414,221.90
  4. Step 4: Simplify right side
    72,839,374.70x = 7,911,909,963,874,569
  5. Step 5: Solve for x
    x = 7,911,909,963,874,569/72,839,374.70
  6. Step 6: Final answer
    x = 108,621,332.85

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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.