Home / 86,181.98-129,312.11-38,771.06

Finding the Fourth Proportional to 86,181.98, 129,312.11 and 38,771.06

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Solution

The fourth proportional to 86,181.98, 129,312.11 and 38,771.06 is: 58,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,181.98 : 129,312.11 = 38,771.06 : x
  2. Step 2: Convert to fraction form
    86,181.98/129,312.11 = 38,771.06/x
  3. Step 3: Cross multiply
    86,181.98x = 129,312.11 × 38,771.06
  4. Step 4: Simplify right side
    86,181.98x = 5,013,567,025.90
  5. Step 5: Solve for x
    x = 5,013,567,025.90/86,181.98
  6. Step 6: Final answer
    x = 58,174.20

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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.