Home / 81,784.45-112,872.62-45,973.69

Finding the Fourth Proportional to 81,784.45, 112,872.62 and 45,973.69

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Solution

The fourth proportional to 81,784.45, 112,872.62 and 45,973.69 is: 63,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,784.45 : 112,872.62 = 45,973.69 : x
  2. Step 2: Convert to fraction form
    81,784.45/112,872.62 = 45,973.69/x
  3. Step 3: Cross multiply
    81,784.45x = 112,872.62 × 45,973.69
  4. Step 4: Simplify right side
    81,784.45x = 5,189,170,674.12
  5. Step 5: Solve for x
    x = 5,189,170,674.12/81,784.45
  6. Step 6: Final answer
    x = 63,449.35

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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.