Home / 83,121.12-124,680.74-56,400.98

Finding the Fourth Proportional to 83,121.12, 124,680.74 and 56,400.98

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Solution

The fourth proportional to 83,121.12, 124,680.74 and 56,400.98 is: 84,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121.12 : 124,680.74 = 56,400.98 : x
  2. Step 2: Convert to fraction form
    83,121.12/124,680.74 = 56,400.98/x
  3. Step 3: Cross multiply
    83,121.12x = 124,680.74 × 56,400.98
  4. Step 4: Simplify right side
    83,121.12x = 7,032,115,017.72
  5. Step 5: Solve for x
    x = 7,032,115,017.72/83,121.12
  6. Step 6: Final answer
    x = 84,600.82

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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.