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Finding the Fourth Proportional to 90,687.86, 136,032.11 and 27,508.53

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Solution

The fourth proportional to 90,687.86, 136,032.11 and 27,508.53 is: 41,262.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.86 : 136,032.11 = 27,508.53 : x
  2. Step 2: Convert to fraction form
    90,687.86/136,032.11 = 27,508.53/x
  3. Step 3: Cross multiply
    90,687.86x = 136,032.11 × 27,508.53
  4. Step 4: Simplify right side
    90,687.86x = 3,742,043,463.43
  5. Step 5: Solve for x
    x = 3,742,043,463.43/90,687.86
  6. Step 6: Final answer
    x = 41,262.89

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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.