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Finding the Fourth Proportional to 84,254.58, 126,381.87 and 57,879.36

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Solution

The fourth proportional to 84,254.58, 126,381.87 and 57,879.36 is: 86,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,254.58 : 126,381.87 = 57,879.36 : x
  2. Step 2: Convert to fraction form
    84,254.58/126,381.87 = 57,879.36/x
  3. Step 3: Cross multiply
    84,254.58x = 126,381.87 × 57,879.36
  4. Step 4: Simplify right side
    84,254.58x = 7,314,901,751.20
  5. Step 5: Solve for x
    x = 7,314,901,751.20/84,254.58
  6. Step 6: Final answer
    x = 86,819.04

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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.