Home / 81,528.64-122,337.08-34,147.88

Finding the Fourth Proportional to 81,528.64, 122,337.08 and 34,147.88

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Solution

The fourth proportional to 81,528.64, 122,337.08 and 34,147.88 is: 51,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.64 : 122,337.08 = 34,147.88 : x
  2. Step 2: Convert to fraction form
    81,528.64/122,337.08 = 34,147.88/x
  3. Step 3: Cross multiply
    81,528.64x = 122,337.08 × 34,147.88
  4. Step 4: Simplify right side
    81,528.64x = 4,177,551,927.39
  5. Step 5: Solve for x
    x = 4,177,551,927.39/81,528.64
  6. Step 6: Final answer
    x = 51,240.30

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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.