Home / 91,969.20-137,953.80-47,609.55

Finding the Fourth Proportional to 91,969.20, 137,953.80 and 47,609.55

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Solution

The fourth proportional to 91,969.20, 137,953.80 and 47,609.55 is: 71,414.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,969.20 : 137,953.80 = 47,609.55 : x
  2. Step 2: Convert to fraction form
    91,969.20/137,953.80 = 47,609.55/x
  3. Step 3: Cross multiply
    91,969.20x = 137,953.80 × 47,609.55
  4. Step 4: Simplify right side
    91,969.20x = 6,567,918,338.79
  5. Step 5: Solve for x
    x = 6,567,918,338.79/91,969.20
  6. Step 6: Final answer
    x = 71,414.33

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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.