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Finding the Fourth Proportional to 86,146.74, 129,220.11 and 26,987.04

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Solution

The fourth proportional to 86,146.74, 129,220.11 and 26,987.04 is: 40,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,146.74 : 129,220.11 = 26,987.04 : x
  2. Step 2: Convert to fraction form
    86,146.74/129,220.11 = 26,987.04/x
  3. Step 3: Cross multiply
    86,146.74x = 129,220.11 × 26,987.04
  4. Step 4: Simplify right side
    86,146.74x = 3,487,268,277.37
  5. Step 5: Solve for x
    x = 3,487,268,277.37/86,146.74
  6. Step 6: Final answer
    x = 40,480.56

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Similar ratio
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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.