Home / 78,045.57-107,691.30-47,402.73

Finding the Fourth Proportional to 78,045.57, 107,691.30 and 47,402.73

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Solution

The fourth proportional to 78,045.57, 107,691.30 and 47,402.73 is: 65,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,045.57 : 107,691.30 = 47,402.73 : x
  2. Step 2: Convert to fraction form
    78,045.57/107,691.30 = 47,402.73/x
  3. Step 3: Cross multiply
    78,045.57x = 107,691.30 × 47,402.73
  4. Step 4: Simplify right side
    78,045.57x = 5,104,861,213.41
  5. Step 5: Solve for x
    x = 5,104,861,213.41/78,045.57
  6. Step 6: Final answer
    x = 65,408.73

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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.