Home / 83,045,344.80-124,568,017.20-78,262,375.80

Finding the Fourth Proportional to 83,045,344.80, 124,568,017.20 and 78,262,375.80

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Solution

The fourth proportional to 83,045,344.80, 124,568,017.20 and 78,262,375.80 is: 117,393,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,045,344.80 : 124,568,017.20 = 78,262,375.80 : x
  2. Step 2: Convert to fraction form
    83,045,344.80/124,568,017.20 = 78,262,375.80/x
  3. Step 3: Cross multiply
    83,045,344.80x = 124,568,017.20 × 78,262,375.80
  4. Step 4: Simplify right side
    83,045,344.80x = 9,748,988,974,767,264
  5. Step 5: Solve for x
    x = 9,748,988,974,767,264/83,045,344.80
  6. Step 6: Final answer
    x = 117,393,563.70

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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.