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Finding the Fourth Proportional to 91,221.20, 136,828.80 and 41,301.30

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Solution

The fourth proportional to 91,221.20, 136,828.80 and 41,301.30 is: 61,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,221.20 : 136,828.80 = 41,301.30 : x
  2. Step 2: Convert to fraction form
    91,221.20/136,828.80 = 41,301.30/x
  3. Step 3: Cross multiply
    91,221.20x = 136,828.80 × 41,301.30
  4. Step 4: Simplify right side
    91,221.20x = 5,651,207,317.44
  5. Step 5: Solve for x
    x = 5,651,207,317.44/91,221.20
  6. Step 6: Final answer
    x = 61,950.59

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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.