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Finding the Fourth Proportional to 86,180.52, 129,173.22 and 43,942.08

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Solution

The fourth proportional to 86,180.52, 129,173.22 and 43,942.08 is: 65,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,180.52 : 129,173.22 = 43,942.08 : x
  2. Step 2: Convert to fraction form
    86,180.52/129,173.22 = 43,942.08/x
  3. Step 3: Cross multiply
    86,180.52x = 129,173.22 × 43,942.08
  4. Step 4: Simplify right side
    86,180.52x = 5,676,139,967.10
  5. Step 5: Solve for x
    x = 5,676,139,967.10/86,180.52
  6. Step 6: Final answer
    x = 65,863.38

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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.