Home / 81,044.24-111,887.88-61,772.72

Finding the Fourth Proportional to 81,044.24, 111,887.88 and 61,772.72

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Solution

The fourth proportional to 81,044.24, 111,887.88 and 61,772.72 is: 85,282.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044.24 : 111,887.88 = 61,772.72 : x
  2. Step 2: Convert to fraction form
    81,044.24/111,887.88 = 61,772.72/x
  3. Step 3: Cross multiply
    81,044.24x = 111,887.88 × 61,772.72
  4. Step 4: Simplify right side
    81,044.24x = 6,911,618,682.63
  5. Step 5: Solve for x
    x = 6,911,618,682.63/81,044.24
  6. Step 6: Final answer
    x = 85,282.05

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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.