Home / 82,787.52-114,113.60-55,921.60

Finding the Fourth Proportional to 82,787.52, 114,113.60 and 55,921.60

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Solution

The fourth proportional to 82,787.52, 114,113.60 and 55,921.60 is: 77,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,787.52 : 114,113.60 = 55,921.60 : x
  2. Step 2: Convert to fraction form
    82,787.52/114,113.60 = 55,921.60/x
  3. Step 3: Cross multiply
    82,787.52x = 114,113.60 × 55,921.60
  4. Step 4: Simplify right side
    82,787.52x = 6,381,415,093.76
  5. Step 5: Solve for x
    x = 6,381,415,093.76/82,787.52
  6. Step 6: Final answer
    x = 77,081.85

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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.