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Finding the Fourth Proportional to 84,784.56, 127,176.90 and 29,380.56

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Solution

The fourth proportional to 84,784.56, 127,176.90 and 29,380.56 is: 44,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,784.56 : 127,176.90 = 29,380.56 : x
  2. Step 2: Convert to fraction form
    84,784.56/127,176.90 = 29,380.56/x
  3. Step 3: Cross multiply
    84,784.56x = 127,176.90 × 29,380.56
  4. Step 4: Simplify right side
    84,784.56x = 3,736,528,541.06
  5. Step 5: Solve for x
    x = 3,736,528,541.06/84,784.56
  6. Step 6: Final answer
    x = 44,070.86

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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.