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Finding the Fourth Proportional to 85,832.60, 128,712.45 and 41,472.95

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Solution

The fourth proportional to 85,832.60, 128,712.45 and 41,472.95 is: 62,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832.60 : 128,712.45 = 41,472.95 : x
  2. Step 2: Convert to fraction form
    85,832.60/128,712.45 = 41,472.95/x
  3. Step 3: Cross multiply
    85,832.60x = 128,712.45 × 41,472.95
  4. Step 4: Simplify right side
    85,832.60x = 5,338,085,003.23
  5. Step 5: Solve for x
    x = 5,338,085,003.23/85,832.60
  6. Step 6: Final answer
    x = 62,191.81

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1.5x scale

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.