Home / 78,635.04-108,515.60-42,824.96

Finding the Fourth Proportional to 78,635.04, 108,515.60 and 42,824.96

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Solution

The fourth proportional to 78,635.04, 108,515.60 and 42,824.96 is: 59,098.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,635.04 : 108,515.60 = 42,824.96 : x
  2. Step 2: Convert to fraction form
    78,635.04/108,515.60 = 42,824.96/x
  3. Step 3: Cross multiply
    78,635.04x = 108,515.60 × 42,824.96
  4. Step 4: Simplify right side
    78,635.04x = 4,647,176,229.38
  5. Step 5: Solve for x
    x = 4,647,176,229.38/78,635.04
  6. Step 6: Final answer
    x = 59,098.03

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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.