Home / 77,986.59-117,023.63-31,243.11

Finding the Fourth Proportional to 77,986.59, 117,023.63 and 31,243.11

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Solution

The fourth proportional to 77,986.59, 117,023.63 and 31,243.11 is: 46,882.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,986.59 : 117,023.63 = 31,243.11 : x
  2. Step 2: Convert to fraction form
    77,986.59/117,023.63 = 31,243.11/x
  3. Step 3: Cross multiply
    77,986.59x = 117,023.63 × 31,243.11
  4. Step 4: Simplify right side
    77,986.59x = 3,656,181,988.47
  5. Step 5: Solve for x
    x = 3,656,181,988.47/77,986.59
  6. Step 6: Final answer
    x = 46,882.19

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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.