Home / 78,422.19-108,220.72-43,964.64

Finding the Fourth Proportional to 78,422.19, 108,220.72 and 43,964.64

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Solution

The fourth proportional to 78,422.19, 108,220.72 and 43,964.64 is: 60,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,422.19 : 108,220.72 = 43,964.64 : x
  2. Step 2: Convert to fraction form
    78,422.19/108,220.72 = 43,964.64/x
  3. Step 3: Cross multiply
    78,422.19x = 108,220.72 × 43,964.64
  4. Step 4: Simplify right side
    78,422.19x = 4,757,884,939.33
  5. Step 5: Solve for x
    x = 4,757,884,939.33/78,422.19
  6. Step 6: Final answer
    x = 60,670.14

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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.