Home / 81,629.40-122,444.10-71,261.40

Finding the Fourth Proportional to 81,629.40, 122,444.10 and 71,261.40

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Solution

The fourth proportional to 81,629.40, 122,444.10 and 71,261.40 is: 106,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.40 : 122,444.10 = 71,261.40 : x
  2. Step 2: Convert to fraction form
    81,629.40/122,444.10 = 71,261.40/x
  3. Step 3: Cross multiply
    81,629.40x = 122,444.10 × 71,261.40
  4. Step 4: Simplify right side
    81,629.40x = 8,725,537,987.74
  5. Step 5: Solve for x
    x = 8,725,537,987.74/81,629.40
  6. Step 6: Final answer
    x = 106,892.10

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1.5x scale

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.