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Finding the Fourth Proportional to 172,640,659.80, 258,960,989.70 and 44,989,843.80

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Solution

The fourth proportional to 172,640,659.80, 258,960,989.70 and 44,989,843.80 is: 67,484,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,640,659.80 : 258,960,989.70 = 44,989,843.80 : x
  2. Step 2: Convert to fraction form
    172,640,659.80/258,960,989.70 = 44,989,843.80/x
  3. Step 3: Cross multiply
    172,640,659.80x = 258,960,989.70 × 44,989,843.80
  4. Step 4: Simplify right side
    172,640,659.80x = 11,650,614,476,896,408
  5. Step 5: Solve for x
    x = 11,650,614,476,896,408/172,640,659.80
  6. Step 6: Final answer
    x = 67,484,765.70

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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.