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Finding the Fourth Proportional to 84,976.80, 127,501.65 and 43,423.80

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Solution

The fourth proportional to 84,976.80, 127,501.65 and 43,423.80 is: 65,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,976.80 : 127,501.65 = 43,423.80 : x
  2. Step 2: Convert to fraction form
    84,976.80/127,501.65 = 43,423.80/x
  3. Step 3: Cross multiply
    84,976.80x = 127,501.65 × 43,423.80
  4. Step 4: Simplify right side
    84,976.80x = 5,536,606,149.27
  5. Step 5: Solve for x
    x = 5,536,606,149.27/84,976.80
  6. Step 6: Final answer
    x = 65,154.33

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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.