Home / 81,727.66-112,783.40-45,428.16

Finding the Fourth Proportional to 81,727.66, 112,783.40 and 45,428.16

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Solution

The fourth proportional to 81,727.66, 112,783.40 and 45,428.16 is: 62,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,727.66 : 112,783.40 = 45,428.16 : x
  2. Step 2: Convert to fraction form
    81,727.66/112,783.40 = 45,428.16/x
  3. Step 3: Cross multiply
    81,727.66x = 112,783.40 × 45,428.16
  4. Step 4: Simplify right side
    81,727.66x = 5,123,542,340.54
  5. Step 5: Solve for x
    x = 5,123,542,340.54/81,727.66
  6. Step 6: Final answer
    x = 62,690.43

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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.