Home / 78,681.11-117,908.87-62,933.76

Finding the Fourth Proportional to 78,681.11, 117,908.87 and 62,933.76

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Solution

The fourth proportional to 78,681.11, 117,908.87 and 62,933.76 is: 94,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,681.11 : 117,908.87 = 62,933.76 : x
  2. Step 2: Convert to fraction form
    78,681.11/117,908.87 = 62,933.76/x
  3. Step 3: Cross multiply
    78,681.11x = 117,908.87 × 62,933.76
  4. Step 4: Simplify right side
    78,681.11x = 7,420,448,211.78
  5. Step 5: Solve for x
    x = 7,420,448,211.78/78,681.11
  6. Step 6: Final answer
    x = 94,310.42

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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.