Home / 78,161.20-107,864.44-47,963.21

Finding the Fourth Proportional to 78,161.20, 107,864.44 and 47,963.21

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Solution

The fourth proportional to 78,161.20, 107,864.44 and 47,963.21 is: 66,190.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.20 : 107,864.44 = 47,963.21 : x
  2. Step 2: Convert to fraction form
    78,161.20/107,864.44 = 47,963.21/x
  3. Step 3: Cross multiply
    78,161.20x = 107,864.44 × 47,963.21
  4. Step 4: Simplify right side
    78,161.20x = 5,173,524,128.02
  5. Step 5: Solve for x
    x = 5,173,524,128.02/78,161.20
  6. Step 6: Final answer
    x = 66,190.44

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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.