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Finding the Fourth Proportional to 89,681.97, 123,766.74 and 49,395.72

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Solution

The fourth proportional to 89,681.97, 123,766.74 and 49,395.72 is: 68,169.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,681.97 : 123,766.74 = 49,395.72 : x
  2. Step 2: Convert to fraction form
    89,681.97/123,766.74 = 49,395.72/x
  3. Step 3: Cross multiply
    89,681.97x = 123,766.74 × 49,395.72
  4. Step 4: Simplify right side
    89,681.97x = 6,113,547,698.48
  5. Step 5: Solve for x
    x = 6,113,547,698.48/89,681.97
  6. Step 6: Final answer
    x = 68,169.19

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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.