Home / 105,561.06-145,668.90-57,805.20

Finding the Fourth Proportional to 105,561.06, 145,668.90 and 57,805.20

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Solution

The fourth proportional to 105,561.06, 145,668.90 and 57,805.20 is: 79,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,561.06 : 145,668.90 = 57,805.20 : x
  2. Step 2: Convert to fraction form
    105,561.06/145,668.90 = 57,805.20/x
  3. Step 3: Cross multiply
    105,561.06x = 145,668.90 × 57,805.20
  4. Step 4: Simplify right side
    105,561.06x = 8,420,419,898.28
  5. Step 5: Solve for x
    x = 8,420,419,898.28/105,561.06
  6. Step 6: Final answer
    x = 79,768.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.