Home / 75,121.90-103,668.25-43,290.52

Finding the Fourth Proportional to 75,121.90, 103,668.25 and 43,290.52

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Solution

The fourth proportional to 75,121.90, 103,668.25 and 43,290.52 is: 59,740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.90 : 103,668.25 = 43,290.52 : x
  2. Step 2: Convert to fraction form
    75,121.90/103,668.25 = 43,290.52/x
  3. Step 3: Cross multiply
    75,121.90x = 103,668.25 × 43,290.52
  4. Step 4: Simplify right side
    75,121.90x = 4,487,852,449.99
  5. Step 5: Solve for x
    x = 4,487,852,449.99/75,121.90
  6. Step 6: Final answer
    x = 59,740.93

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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.