Home / 81,487.76-122,137.04-30,854.59

Finding the Fourth Proportional to 81,487.76, 122,137.04 and 30,854.59

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Solution

The fourth proportional to 81,487.76, 122,137.04 and 30,854.59 is: 46,246.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487.76 : 122,137.04 = 30,854.59 : x
  2. Step 2: Convert to fraction form
    81,487.76/122,137.04 = 30,854.59/x
  3. Step 3: Cross multiply
    81,487.76x = 122,137.04 × 30,854.59
  4. Step 4: Simplify right side
    81,487.76x = 3,768,488,064.81
  5. Step 5: Solve for x
    x = 3,768,488,064.81/81,487.76
  6. Step 6: Final answer
    x = 46,246.07

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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.