Home / 78,231.10-108,018.12-48,057.79

Finding the Fourth Proportional to 78,231.10, 108,018.12 and 48,057.79

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Solution

The fourth proportional to 78,231.10, 108,018.12 and 48,057.79 is: 66,356.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,231.10 : 108,018.12 = 48,057.79 : x
  2. Step 2: Convert to fraction form
    78,231.10/108,018.12 = 48,057.79/x
  3. Step 3: Cross multiply
    78,231.10x = 108,018.12 × 48,057.79
  4. Step 4: Simplify right side
    78,231.10x = 5,191,112,127.15
  5. Step 5: Solve for x
    x = 5,191,112,127.15/78,231.10
  6. Step 6: Final answer
    x = 66,356.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.