Home / 86,147.04-129,220.76-26,987.88

Finding the Fourth Proportional to 86,147.04, 129,220.76 and 26,987.88

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Solution

The fourth proportional to 86,147.04, 129,220.76 and 26,987.88 is: 40,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,147.04 : 129,220.76 = 26,987.88 : x
  2. Step 2: Convert to fraction form
    86,147.04/129,220.76 = 26,987.88/x
  3. Step 3: Cross multiply
    86,147.04x = 129,220.76 × 26,987.88
  4. Step 4: Simplify right side
    86,147.04x = 3,487,394,364.39
  5. Step 5: Solve for x
    x = 3,487,394,364.39/86,147.04
  6. Step 6: Final answer
    x = 40,481.88

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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.