Home / 86,213.35-129,287.76-30,039.04

Finding the Fourth Proportional to 86,213.35, 129,287.76 and 30,039.04

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Solution

The fourth proportional to 86,213.35, 129,287.76 and 30,039.04 is: 45,047.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,213.35 : 129,287.76 = 30,039.04 : x
  2. Step 2: Convert to fraction form
    86,213.35/129,287.76 = 30,039.04/x
  3. Step 3: Cross multiply
    86,213.35x = 129,287.76 × 30,039.04
  4. Step 4: Simplify right side
    86,213.35x = 3,883,680,194.15
  5. Step 5: Solve for x
    x = 3,883,680,194.15/86,213.35
  6. Step 6: Final answer
    x = 45,047.32

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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.