Home / 89,668.12-123,756.80-68,407.24

Finding the Fourth Proportional to 89,668.12, 123,756.80 and 68,407.24

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Solution

The fourth proportional to 89,668.12, 123,756.80 and 68,407.24 is: 94,413.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,668.12 : 123,756.80 = 68,407.24 : x
  2. Step 2: Convert to fraction form
    89,668.12/123,756.80 = 68,407.24/x
  3. Step 3: Cross multiply
    89,668.12x = 123,756.80 × 68,407.24
  4. Step 4: Simplify right side
    89,668.12x = 8,465,861,119.23
  5. Step 5: Solve for x
    x = 8,465,861,119.23/89,668.12
  6. Step 6: Final answer
    x = 94,413.28

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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.