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Finding the Fourth Proportional to 84,744.64, 127,158 and 34,861.60

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Solution

The fourth proportional to 84,744.64, 127,158 and 34,861.60 is: 52,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,744.64 : 127,158 = 34,861.60 : x
  2. Step 2: Convert to fraction form
    84,744.64/127,158 = 34,861.60/x
  3. Step 3: Cross multiply
    84,744.64x = 127,158 × 34,861.60
  4. Step 4: Simplify right side
    84,744.64x = 4,432,931,332.80
  5. Step 5: Solve for x
    x = 4,432,931,332.80/84,744.64
  6. Step 6: Final answer
    x = 52,309.28

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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.