Home / 81,772.64-122,669.49-25,615.34

Finding the Fourth Proportional to 81,772.64, 122,669.49 and 25,615.34

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Solution

The fourth proportional to 81,772.64, 122,669.49 and 25,615.34 is: 38,426.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,772.64 : 122,669.49 = 25,615.34 : x
  2. Step 2: Convert to fraction form
    81,772.64/122,669.49 = 25,615.34/x
  3. Step 3: Cross multiply
    81,772.64x = 122,669.49 × 25,615.34
  4. Step 4: Simplify right side
    81,772.64x = 3,142,220,080.63
  5. Step 5: Solve for x
    x = 3,142,220,080.63/81,772.64
  6. Step 6: Final answer
    x = 38,426.30

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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.