Home / 78,849.64-108,796.26-45,309.16

Finding the Fourth Proportional to 78,849.64, 108,796.26 and 45,309.16

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Solution

The fourth proportional to 78,849.64, 108,796.26 and 45,309.16 is: 62,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,849.64 : 108,796.26 = 45,309.16 : x
  2. Step 2: Convert to fraction form
    78,849.64/108,796.26 = 45,309.16/x
  3. Step 3: Cross multiply
    78,849.64x = 108,796.26 × 45,309.16
  4. Step 4: Simplify right side
    78,849.64x = 4,929,467,151.74
  5. Step 5: Solve for x
    x = 4,929,467,151.74/78,849.64
  6. Step 6: Final answer
    x = 62,517.31

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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.