Home / 85,071.54-117,409.86-48,787.20

Finding the Fourth Proportional to 85,071.54, 117,409.86 and 48,787.20

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Solution

The fourth proportional to 85,071.54, 117,409.86 and 48,787.20 is: 67,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,071.54 : 117,409.86 = 48,787.20 : x
  2. Step 2: Convert to fraction form
    85,071.54/117,409.86 = 48,787.20/x
  3. Step 3: Cross multiply
    85,071.54x = 117,409.86 × 48,787.20
  4. Step 4: Simplify right side
    85,071.54x = 5,728,098,321.79
  5. Step 5: Solve for x
    x = 5,728,098,321.79/85,071.54
  6. Step 6: Final answer
    x = 67,332.72

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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.