Home / 78,223.04-107,919.48-51,380.12

Finding the Fourth Proportional to 78,223.04, 107,919.48 and 51,380.12

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Solution

The fourth proportional to 78,223.04, 107,919.48 and 51,380.12 is: 70,885.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,223.04 : 107,919.48 = 51,380.12 : x
  2. Step 2: Convert to fraction form
    78,223.04/107,919.48 = 51,380.12/x
  3. Step 3: Cross multiply
    78,223.04x = 107,919.48 × 51,380.12
  4. Step 4: Simplify right side
    78,223.04x = 5,544,915,832.74
  5. Step 5: Solve for x
    x = 5,544,915,832.74/78,223.04
  6. Step 6: Final answer
    x = 70,885.97

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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.