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Finding the Fourth Proportional to 85,586.66, 127,752.92 and 75,486.51

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Solution

The fourth proportional to 85,586.66, 127,752.92 and 75,486.51 is: 112,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,586.66 : 127,752.92 = 75,486.51 : x
  2. Step 2: Convert to fraction form
    85,586.66/127,752.92 = 75,486.51/x
  3. Step 3: Cross multiply
    85,586.66x = 127,752.92 × 75,486.51
  4. Step 4: Simplify right side
    85,586.66x = 9,643,621,695.68
  5. Step 5: Solve for x
    x = 9,643,621,695.68/85,586.66
  6. Step 6: Final answer
    x = 112,676.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.