Home / 81,854.08-122,801.15-28,538.66

Finding the Fourth Proportional to 81,854.08, 122,801.15 and 28,538.66

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Solution

The fourth proportional to 81,854.08, 122,801.15 and 28,538.66 is: 42,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,854.08 : 122,801.15 = 28,538.66 : x
  2. Step 2: Convert to fraction form
    81,854.08/122,801.15 = 28,538.66/x
  3. Step 3: Cross multiply
    81,854.08x = 122,801.15 × 28,538.66
  4. Step 4: Simplify right side
    81,854.08x = 3,504,580,645.81
  5. Step 5: Solve for x
    x = 3,504,580,645.81/81,854.08
  6. Step 6: Final answer
    x = 42,814.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.