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Finding the Fourth Proportional to 78,231.79, 117,335.28 and 24,916.85

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Solution

The fourth proportional to 78,231.79, 117,335.28 and 24,916.85 is: 37,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,231.79 : 117,335.28 = 24,916.85 : x
  2. Step 2: Convert to fraction form
    78,231.79/117,335.28 = 24,916.85/x
  3. Step 3: Cross multiply
    78,231.79x = 117,335.28 × 24,916.85
  4. Step 4: Simplify right side
    78,231.79x = 2,923,625,518.24
  5. Step 5: Solve for x
    x = 2,923,625,518.24/78,231.79
  6. Step 6: Final answer
    x = 37,371.32

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1.5x scale

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.