Home / 81,582.52-112,374.12-57,668.08

Finding the Fourth Proportional to 81,582.52, 112,374.12 and 57,668.08

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Solution

The fourth proportional to 81,582.52, 112,374.12 and 57,668.08 is: 79,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.52 : 112,374.12 = 57,668.08 : x
  2. Step 2: Convert to fraction form
    81,582.52/112,374.12 = 57,668.08/x
  3. Step 3: Cross multiply
    81,582.52x = 112,374.12 × 57,668.08
  4. Step 4: Simplify right side
    81,582.52x = 6,480,399,742.09
  5. Step 5: Solve for x
    x = 6,480,399,742.09/81,582.52
  6. Step 6: Final answer
    x = 79,433.68

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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.