Home / 80,688.54-121,033.36-28,097.86

Finding the Fourth Proportional to 80,688.54, 121,033.36 and 28,097.86

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Solution

The fourth proportional to 80,688.54, 121,033.36 and 28,097.86 is: 42,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,688.54 : 121,033.36 = 28,097.86 : x
  2. Step 2: Convert to fraction form
    80,688.54/121,033.36 = 28,097.86/x
  3. Step 3: Cross multiply
    80,688.54x = 121,033.36 × 28,097.86
  4. Step 4: Simplify right side
    80,688.54x = 3,400,778,404.61
  5. Step 5: Solve for x
    x = 3,400,778,404.61/80,688.54
  6. Step 6: Final answer
    x = 42,146.98

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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.