Home / 81,180.36-112,116.78-55,753.74

Finding the Fourth Proportional to 81,180.36, 112,116.78 and 55,753.74

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Solution

The fourth proportional to 81,180.36, 112,116.78 and 55,753.74 is: 77,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,180.36 : 112,116.78 = 55,753.74 : x
  2. Step 2: Convert to fraction form
    81,180.36/112,116.78 = 55,753.74/x
  3. Step 3: Cross multiply
    81,180.36x = 112,116.78 × 55,753.74
  4. Step 4: Simplify right side
    81,180.36x = 6,250,929,801.76
  5. Step 5: Solve for x
    x = 6,250,929,801.76/81,180.36
  6. Step 6: Final answer
    x = 77,000.52

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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.