Home / 81,729.90-112,741.22-51,463.23

Finding the Fourth Proportional to 81,729.90, 112,741.22 and 51,463.23

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Solution

The fourth proportional to 81,729.90, 112,741.22 and 51,463.23 is: 70,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,729.90 : 112,741.22 = 51,463.23 : x
  2. Step 2: Convert to fraction form
    81,729.90/112,741.22 = 51,463.23/x
  3. Step 3: Cross multiply
    81,729.90x = 112,741.22 × 51,463.23
  4. Step 4: Simplify right side
    81,729.90x = 5,802,027,078.02
  5. Step 5: Solve for x
    x = 5,802,027,078.02/81,729.90
  6. Step 6: Final answer
    x = 70,990.26

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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.