Home / 87,879.12-121,272.48-47,592.33

Finding the Fourth Proportional to 87,879.12, 121,272.48 and 47,592.33

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Solution

The fourth proportional to 87,879.12, 121,272.48 and 47,592.33 is: 65,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.12 : 121,272.48 = 47,592.33 : x
  2. Step 2: Convert to fraction form
    87,879.12/121,272.48 = 47,592.33/x
  3. Step 3: Cross multiply
    87,879.12x = 121,272.48 × 47,592.33
  4. Step 4: Simplify right side
    87,879.12x = 5,771,639,888.08
  5. Step 5: Solve for x
    x = 5,771,639,888.08/87,879.12
  6. Step 6: Final answer
    x = 65,677.03

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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.