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Finding the Fourth Proportional to 91,215.60, 136,758.60 and 41,319.60

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Solution

The fourth proportional to 91,215.60, 136,758.60 and 41,319.60 is: 61,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,215.60 : 136,758.60 = 41,319.60 : x
  2. Step 2: Convert to fraction form
    91,215.60/136,758.60 = 41,319.60/x
  3. Step 3: Cross multiply
    91,215.60x = 136,758.60 × 41,319.60
  4. Step 4: Simplify right side
    91,215.60x = 5,650,810,648.56
  5. Step 5: Solve for x
    x = 5,650,810,648.56/91,215.60
  6. Step 6: Final answer
    x = 61,950.05

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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.