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Finding the Fourth Proportional to 91,972.60, 137,958.90 and 32,810.20

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Solution

The fourth proportional to 91,972.60, 137,958.90 and 32,810.20 is: 49,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,972.60 : 137,958.90 = 32,810.20 : x
  2. Step 2: Convert to fraction form
    91,972.60/137,958.90 = 32,810.20/x
  3. Step 3: Cross multiply
    91,972.60x = 137,958.90 × 32,810.20
  4. Step 4: Simplify right side
    91,972.60x = 4,526,459,100.78
  5. Step 5: Solve for x
    x = 4,526,459,100.78/91,972.60
  6. Step 6: Final answer
    x = 49,215.30

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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.