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Finding the Fourth Proportional to 90,291.84, 135,456.84 and 27,109.68

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Solution

The fourth proportional to 90,291.84, 135,456.84 and 27,109.68 is: 40,670.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,291.84 : 135,456.84 = 27,109.68 : x
  2. Step 2: Convert to fraction form
    90,291.84/135,456.84 = 27,109.68/x
  3. Step 3: Cross multiply
    90,291.84x = 135,456.84 × 27,109.68
  4. Step 4: Simplify right side
    90,291.84x = 3,672,191,586.21
  5. Step 5: Solve for x
    x = 3,672,191,586.21/90,291.84
  6. Step 6: Final answer
    x = 40,670.25

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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.