Home / 86,422.09-129,630.69-47,227.42

Finding the Fourth Proportional to 86,422.09, 129,630.69 and 47,227.42

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Solution

The fourth proportional to 86,422.09, 129,630.69 and 47,227.42 is: 70,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,422.09 : 129,630.69 = 47,227.42 : x
  2. Step 2: Convert to fraction form
    86,422.09/129,630.69 = 47,227.42/x
  3. Step 3: Cross multiply
    86,422.09x = 129,630.69 × 47,227.42
  4. Step 4: Simplify right side
    86,422.09x = 6,122,123,041.52
  5. Step 5: Solve for x
    x = 6,122,123,041.52/86,422.09
  6. Step 6: Final answer
    x = 70,839.79

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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.