Home / 78,294.24-117,411.20-28,359.52

Finding the Fourth Proportional to 78,294.24, 117,411.20 and 28,359.52

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Solution

The fourth proportional to 78,294.24, 117,411.20 and 28,359.52 is: 42,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,294.24 : 117,411.20 = 28,359.52 : x
  2. Step 2: Convert to fraction form
    78,294.24/117,411.20 = 28,359.52/x
  3. Step 3: Cross multiply
    78,294.24x = 117,411.20 × 28,359.52
  4. Step 4: Simplify right side
    78,294.24x = 3,329,725,274.62
  5. Step 5: Solve for x
    x = 3,329,725,274.62/78,294.24
  6. Step 6: Final answer
    x = 42,528.36

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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.