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Finding the Fourth Proportional to 85,377.66, 117,827.91 and 49,578.90

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Solution

The fourth proportional to 85,377.66, 117,827.91 and 49,578.90 is: 68,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,377.66 : 117,827.91 = 49,578.90 : x
  2. Step 2: Convert to fraction form
    85,377.66/117,827.91 = 49,578.90/x
  3. Step 3: Cross multiply
    85,377.66x = 117,827.91 × 49,578.90
  4. Step 4: Simplify right side
    85,377.66x = 5,841,778,167.10
  5. Step 5: Solve for x
    x = 5,841,778,167.10/85,377.66
  6. Step 6: Final answer
    x = 68,422.80

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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.