Home / 87,693.12-121,016.32-49,967.36

Finding the Fourth Proportional to 87,693.12, 121,016.32 and 49,967.36

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Solution

The fourth proportional to 87,693.12, 121,016.32 and 49,967.36 is: 68,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,693.12 : 121,016.32 = 49,967.36 : x
  2. Step 2: Convert to fraction form
    87,693.12/121,016.32 = 49,967.36/x
  3. Step 3: Cross multiply
    87,693.12x = 121,016.32 × 49,967.36
  4. Step 4: Simplify right side
    87,693.12x = 6,046,866,027.32
  5. Step 5: Solve for x
    x = 6,046,866,027.32/87,693.12
  6. Step 6: Final answer
    x = 68,954.85

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1.5x scale

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.