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Finding the Fourth Proportional to 91,474.80, 137,212.20 and 25,810.80

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Solution

The fourth proportional to 91,474.80, 137,212.20 and 25,810.80 is: 38,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,474.80 : 137,212.20 = 25,810.80 : x
  2. Step 2: Convert to fraction form
    91,474.80/137,212.20 = 25,810.80/x
  3. Step 3: Cross multiply
    91,474.80x = 137,212.20 × 25,810.80
  4. Step 4: Simplify right side
    91,474.80x = 3,541,556,651.76
  5. Step 5: Solve for x
    x = 3,541,556,651.76/91,474.80
  6. Step 6: Final answer
    x = 38,716.20

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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.