Home / 81,435.46-112,387.16-51,246.66

Finding the Fourth Proportional to 81,435.46, 112,387.16 and 51,246.66

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Solution

The fourth proportional to 81,435.46, 112,387.16 and 51,246.66 is: 70,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435.46 : 112,387.16 = 51,246.66 : x
  2. Step 2: Convert to fraction form
    81,435.46/112,387.16 = 51,246.66/x
  3. Step 3: Cross multiply
    81,435.46x = 112,387.16 × 51,246.66
  4. Step 4: Simplify right side
    81,435.46x = 5,759,465,995.29
  5. Step 5: Solve for x
    x = 5,759,465,995.29/81,435.46
  6. Step 6: Final answer
    x = 70,724.30

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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.