Home / 86,090.70-129,143.46-23,761.20

Finding the Fourth Proportional to 86,090.70, 129,143.46 and 23,761.20

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Solution

The fourth proportional to 86,090.70, 129,143.46 and 23,761.20 is: 35,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,090.70 : 129,143.46 = 23,761.20 : x
  2. Step 2: Convert to fraction form
    86,090.70/129,143.46 = 23,761.20/x
  3. Step 3: Cross multiply
    86,090.70x = 129,143.46 × 23,761.20
  4. Step 4: Simplify right side
    86,090.70x = 3,068,603,581.75
  5. Step 5: Solve for x
    x = 3,068,603,581.75/86,090.70
  6. Step 6: Final answer
    x = 35,643.85

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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.