Home / 78,586.60-108,452.38-42,774.88

Finding the Fourth Proportional to 78,586.60, 108,452.38 and 42,774.88

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Solution

The fourth proportional to 78,586.60, 108,452.38 and 42,774.88 is: 59,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586.60 : 108,452.38 = 42,774.88 : x
  2. Step 2: Convert to fraction form
    78,586.60/108,452.38 = 42,774.88/x
  3. Step 3: Cross multiply
    78,586.60x = 108,452.38 × 42,774.88
  4. Step 4: Simplify right side
    78,586.60x = 4,639,037,540.21
  5. Step 5: Solve for x
    x = 4,639,037,540.21/78,586.60
  6. Step 6: Final answer
    x = 59,030.90

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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.