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Finding the Fourth Proportional to 84,159.64, 126,407.60 and 52,625.80

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Solution

The fourth proportional to 84,159.64, 126,407.60 and 52,625.80 is: 79,043.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,159.64 : 126,407.60 = 52,625.80 : x
  2. Step 2: Convert to fraction form
    84,159.64/126,407.60 = 52,625.80/x
  3. Step 3: Cross multiply
    84,159.64x = 126,407.60 × 52,625.80
  4. Step 4: Simplify right side
    84,159.64x = 6,652,301,076.08
  5. Step 5: Solve for x
    x = 6,652,301,076.08/84,159.64
  6. Step 6: Final answer
    x = 79,043.84

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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.