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Finding the Fourth Proportional to 85,389.67, 117,862.77 and 49,595.77

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Solution

The fourth proportional to 85,389.67, 117,862.77 and 49,595.77 is: 68,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,389.67 : 117,862.77 = 49,595.77 : x
  2. Step 2: Convert to fraction form
    85,389.67/117,862.77 = 49,595.77/x
  3. Step 3: Cross multiply
    85,389.67x = 117,862.77 × 49,595.77
  4. Step 4: Simplify right side
    85,389.67x = 5,845,494,832.48
  5. Step 5: Solve for x
    x = 5,845,494,832.48/85,389.67
  6. Step 6: Final answer
    x = 68,456.70

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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.