Home / 80,950.69-121,352.53-28,331.47

Finding the Fourth Proportional to 80,950.69, 121,352.53 and 28,331.47

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Solution

The fourth proportional to 80,950.69, 121,352.53 and 28,331.47 is: 42,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.69 : 121,352.53 = 28,331.47 : x
  2. Step 2: Convert to fraction form
    80,950.69/121,352.53 = 28,331.47/x
  3. Step 3: Cross multiply
    80,950.69x = 121,352.53 × 28,331.47
  4. Step 4: Simplify right side
    80,950.69x = 3,438,095,697.10
  5. Step 5: Solve for x
    x = 3,438,095,697.10/80,950.69
  6. Step 6: Final answer
    x = 42,471.48

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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.