Home / 78,743.21-117,983.32-55,327.73

Finding the Fourth Proportional to 78,743.21, 117,983.32 and 55,327.73

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Solution

The fourth proportional to 78,743.21, 117,983.32 and 55,327.73 is: 82,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.21 : 117,983.32 = 55,327.73 : x
  2. Step 2: Convert to fraction form
    78,743.21/117,983.32 = 55,327.73/x
  3. Step 3: Cross multiply
    78,743.21x = 117,983.32 × 55,327.73
  4. Step 4: Simplify right side
    78,743.21x = 6,527,748,545.23
  5. Step 5: Solve for x
    x = 6,527,748,545.23/78,743.21
  6. Step 6: Final answer
    x = 82,899.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.