Home / 78,633.14-108,515.70-42,825.14

Finding the Fourth Proportional to 78,633.14, 108,515.70 and 42,825.14

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Solution

The fourth proportional to 78,633.14, 108,515.70 and 42,825.14 is: 59,099.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633.14 : 108,515.70 = 42,825.14 : x
  2. Step 2: Convert to fraction form
    78,633.14/108,515.70 = 42,825.14/x
  3. Step 3: Cross multiply
    78,633.14x = 108,515.70 × 42,825.14
  4. Step 4: Simplify right side
    78,633.14x = 4,647,200,044.70
  5. Step 5: Solve for x
    x = 4,647,200,044.70/78,633.14
  6. Step 6: Final answer
    x = 59,099.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.