Home / 86,256.93-129,344.46-30,090.21

Finding the Fourth Proportional to 86,256.93, 129,344.46 and 30,090.21

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Solution

The fourth proportional to 86,256.93, 129,344.46 and 30,090.21 is: 45,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,256.93 : 129,344.46 = 30,090.21 : x
  2. Step 2: Convert to fraction form
    86,256.93/129,344.46 = 30,090.21/x
  3. Step 3: Cross multiply
    86,256.93x = 129,344.46 × 30,090.21
  4. Step 4: Simplify right side
    86,256.93x = 3,892,001,963.74
  5. Step 5: Solve for x
    x = 3,892,001,963.74/86,256.93
  6. Step 6: Final answer
    x = 45,121.04

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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.