Home / 78,217.60-107,906.40-52,345.12

Finding the Fourth Proportional to 78,217.60, 107,906.40 and 52,345.12

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Solution

The fourth proportional to 78,217.60, 107,906.40 and 52,345.12 is: 72,213.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217.60 : 107,906.40 = 52,345.12 : x
  2. Step 2: Convert to fraction form
    78,217.60/107,906.40 = 52,345.12/x
  3. Step 3: Cross multiply
    78,217.60x = 107,906.40 × 52,345.12
  4. Step 4: Simplify right side
    78,217.60x = 5,648,373,456.77
  5. Step 5: Solve for x
    x = 5,648,373,456.77/78,217.60
  6. Step 6: Final answer
    x = 72,213.59

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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.