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Finding the Fourth Proportional to 84,866.80, 127,127.40 and 43,337.20

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Solution

The fourth proportional to 84,866.80, 127,127.40 and 43,337.20 is: 64,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,866.80 : 127,127.40 = 43,337.20 : x
  2. Step 2: Convert to fraction form
    84,866.80/127,127.40 = 43,337.20/x
  3. Step 3: Cross multiply
    84,866.80x = 127,127.40 × 43,337.20
  4. Step 4: Simplify right side
    84,866.80x = 5,509,345,559.28
  5. Step 5: Solve for x
    x = 5,509,345,559.28/84,866.80
  6. Step 6: Final answer
    x = 64,917.56

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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.