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Finding the Fourth Proportional to 84,966.60, 127,445.85 and 28,801.20

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Solution

The fourth proportional to 84,966.60, 127,445.85 and 28,801.20 is: 43,200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,966.60 : 127,445.85 = 28,801.20 : x
  2. Step 2: Convert to fraction form
    84,966.60/127,445.85 = 28,801.20/x
  3. Step 3: Cross multiply
    84,966.60x = 127,445.85 × 28,801.20
  4. Step 4: Simplify right side
    84,966.60x = 3,670,593,415.02
  5. Step 5: Solve for x
    x = 3,670,593,415.02/84,966.60
  6. Step 6: Final answer
    x = 43,200.43

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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.