Home / 66,456.76-99,669.78-19,698.36

Finding the Fourth Proportional to 66,456.76, 99,669.78 and 19,698.36

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Solution

The fourth proportional to 66,456.76, 99,669.78 and 19,698.36 is: 29,542.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,456.76 : 99,669.78 = 19,698.36 : x
  2. Step 2: Convert to fraction form
    66,456.76/99,669.78 = 19,698.36/x
  3. Step 3: Cross multiply
    66,456.76x = 99,669.78 × 19,698.36
  4. Step 4: Simplify right side
    66,456.76x = 1,963,331,207.56
  5. Step 5: Solve for x
    x = 1,963,331,207.56/66,456.76
  6. Step 6: Final answer
    x = 29,542.99

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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.