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Finding the Fourth Proportional to 86,089.96, 129,173.87 and 43,948.29

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Solution

The fourth proportional to 86,089.96, 129,173.87 and 43,948.29 is: 65,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,089.96 : 129,173.87 = 43,948.29 : x
  2. Step 2: Convert to fraction form
    86,089.96/129,173.87 = 43,948.29/x
  3. Step 3: Cross multiply
    86,089.96x = 129,173.87 × 43,948.29
  4. Step 4: Simplify right side
    86,089.96x = 5,676,970,699.18
  5. Step 5: Solve for x
    x = 5,676,970,699.18/86,089.96
  6. Step 6: Final answer
    x = 65,942.31

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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.