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Finding the Fourth Proportional to 84,818.40, 127,227.60 and 56,751.90

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Solution

The fourth proportional to 84,818.40, 127,227.60 and 56,751.90 is: 85,127.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,818.40 : 127,227.60 = 56,751.90 : x
  2. Step 2: Convert to fraction form
    84,818.40/127,227.60 = 56,751.90/x
  3. Step 3: Cross multiply
    84,818.40x = 127,227.60 × 56,751.90
  4. Step 4: Simplify right side
    84,818.40x = 7,220,408,032.44
  5. Step 5: Solve for x
    x = 7,220,408,032.44/84,818.40
  6. Step 6: Final answer
    x = 85,127.85

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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.