Home / 78,744.24-118,165.56-31,997.12

Finding the Fourth Proportional to 78,744.24, 118,165.56 and 31,997.12

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Solution

The fourth proportional to 78,744.24, 118,165.56 and 31,997.12 is: 48,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.24 : 118,165.56 = 31,997.12 : x
  2. Step 2: Convert to fraction form
    78,744.24/118,165.56 = 31,997.12/x
  3. Step 3: Cross multiply
    78,744.24x = 118,165.56 × 31,997.12
  4. Step 4: Simplify right side
    78,744.24x = 3,780,957,012.36
  5. Step 5: Solve for x
    x = 3,780,957,012.36/78,744.24
  6. Step 6: Final answer
    x = 48,015.66

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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.