Home / 86,353.10-129,541.43-30,180.17

Finding the Fourth Proportional to 86,353.10, 129,541.43 and 30,180.17

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Solution

The fourth proportional to 86,353.10, 129,541.43 and 30,180.17 is: 45,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,353.10 : 129,541.43 = 30,180.17 : x
  2. Step 2: Convert to fraction form
    86,353.10/129,541.43 = 30,180.17/x
  3. Step 3: Cross multiply
    86,353.10x = 129,541.43 × 30,180.17
  4. Step 4: Simplify right side
    86,353.10x = 3,909,582,379.44
  5. Step 5: Solve for x
    x = 3,909,582,379.44/86,353.10
  6. Step 6: Final answer
    x = 45,274.37

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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.