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Finding the Fourth Proportional to 85,712.95, 128,652.35 and 41,370.92

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Solution

The fourth proportional to 85,712.95, 128,652.35 and 41,370.92 is: 62,096.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,712.95 : 128,652.35 = 41,370.92 : x
  2. Step 2: Convert to fraction form
    85,712.95/128,652.35 = 41,370.92/x
  3. Step 3: Cross multiply
    85,712.95x = 128,652.35 × 41,370.92
  4. Step 4: Simplify right side
    85,712.95x = 5,322,466,079.66
  5. Step 5: Solve for x
    x = 5,322,466,079.66/85,712.95
  6. Step 6: Final answer
    x = 62,096.41

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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.