Home / 86,354.10-129,542.93-30,181.17

Finding the Fourth Proportional to 86,354.10, 129,542.93 and 30,181.17

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Solution

The fourth proportional to 86,354.10, 129,542.93 and 30,181.17 is: 45,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,354.10 : 129,542.93 = 30,181.17 : x
  2. Step 2: Convert to fraction form
    86,354.10/129,542.93 = 30,181.17/x
  3. Step 3: Cross multiply
    86,354.10x = 129,542.93 × 30,181.17
  4. Step 4: Simplify right side
    86,354.10x = 3,909,757,192.63
  5. Step 5: Solve for x
    x = 3,909,757,192.63/86,354.10
  6. Step 6: Final answer
    x = 45,275.87

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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.