Home / 78,299.24-117,418.70-28,364.52

Finding the Fourth Proportional to 78,299.24, 117,418.70 and 28,364.52

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Solution

The fourth proportional to 78,299.24, 117,418.70 and 28,364.52 is: 42,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.24 : 117,418.70 = 28,364.52 : x
  2. Step 2: Convert to fraction form
    78,299.24/117,418.70 = 28,364.52/x
  3. Step 3: Cross multiply
    78,299.24x = 117,418.70 × 28,364.52
  4. Step 4: Simplify right side
    78,299.24x = 3,330,525,064.52
  5. Step 5: Solve for x
    x = 3,330,525,064.52/78,299.24
  6. Step 6: Final answer
    x = 42,535.85

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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.