Home / 66,456.81-99,668.19-19,698.75

Finding the Fourth Proportional to 66,456.81, 99,668.19 and 19,698.75

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Solution

The fourth proportional to 66,456.81, 99,668.19 and 19,698.75 is: 29,543.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,456.81 : 99,668.19 = 19,698.75 : x
  2. Step 2: Convert to fraction form
    66,456.81/99,668.19 = 19,698.75/x
  3. Step 3: Cross multiply
    66,456.81x = 99,668.19 × 19,698.75
  4. Step 4: Simplify right side
    66,456.81x = 1,963,338,757.76
  5. Step 5: Solve for x
    x = 1,963,338,757.76/66,456.81
  6. Step 6: Final answer
    x = 29,543.08

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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.