Home / 81,166.32-121,623.86-56,255.04

Finding the Fourth Proportional to 81,166.32, 121,623.86 and 56,255.04

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Solution

The fourth proportional to 81,166.32, 121,623.86 and 56,255.04 is: 84,295.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,166.32 : 121,623.86 = 56,255.04 : x
  2. Step 2: Convert to fraction form
    81,166.32/121,623.86 = 56,255.04/x
  3. Step 3: Cross multiply
    81,166.32x = 121,623.86 × 56,255.04
  4. Step 4: Simplify right side
    81,166.32x = 6,841,955,249.89
  5. Step 5: Solve for x
    x = 6,841,955,249.89/81,166.32
  6. Step 6: Final answer
    x = 84,295.50

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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.