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Finding the Fourth Proportional to 81,582.91, 122,374.37 and 28,994.47

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Solution

The fourth proportional to 81,582.91, 122,374.37 and 28,994.47 is: 43,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.91 : 122,374.37 = 28,994.47 : x
  2. Step 2: Convert to fraction form
    81,582.91/122,374.37 = 28,994.47/x
  3. Step 3: Cross multiply
    81,582.91x = 122,374.37 × 28,994.47
  4. Step 4: Simplify right side
    81,582.91x = 3,548,179,854.76
  5. Step 5: Solve for x
    x = 3,548,179,854.76/81,582.91
  6. Step 6: Final answer
    x = 43,491.71

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1.5x scale

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.