Home / 89,815.74-123,942.86-49,531.20

Finding the Fourth Proportional to 89,815.74, 123,942.86 and 49,531.20

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Solution

The fourth proportional to 89,815.74, 123,942.86 and 49,531.20 is: 68,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,815.74 : 123,942.86 = 49,531.20 : x
  2. Step 2: Convert to fraction form
    89,815.74/123,942.86 = 49,531.20/x
  3. Step 3: Cross multiply
    89,815.74x = 123,942.86 × 49,531.20
  4. Step 4: Simplify right side
    89,815.74x = 6,139,038,587.23
  5. Step 5: Solve for x
    x = 6,139,038,587.23/89,815.74
  6. Step 6: Final answer
    x = 68,351.48

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1.5x scale

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.