Home / 81,758.88-112,912.92-56,331.36

Finding the Fourth Proportional to 81,758.88, 112,912.92 and 56,331.36

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Solution

The fourth proportional to 81,758.88, 112,912.92 and 56,331.36 is: 77,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.88 : 112,912.92 = 56,331.36 : x
  2. Step 2: Convert to fraction form
    81,758.88/112,912.92 = 56,331.36/x
  3. Step 3: Cross multiply
    81,758.88x = 112,912.92 × 56,331.36
  4. Step 4: Simplify right side
    81,758.88x = 6,360,538,345.17
  5. Step 5: Solve for x
    x = 6,360,538,345.17/81,758.88
  6. Step 6: Final answer
    x = 77,796.30

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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.