Home / 80,974.86-121,462.29-28,384.32

Finding the Fourth Proportional to 80,974.86, 121,462.29 and 28,384.32

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Solution

The fourth proportional to 80,974.86, 121,462.29 and 28,384.32 is: 42,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,974.86 : 121,462.29 = 28,384.32 : x
  2. Step 2: Convert to fraction form
    80,974.86/121,462.29 = 28,384.32/x
  3. Step 3: Cross multiply
    80,974.86x = 121,462.29 × 28,384.32
  4. Step 4: Simplify right side
    80,974.86x = 3,447,624,507.29
  5. Step 5: Solve for x
    x = 3,447,624,507.29/80,974.86
  6. Step 6: Final answer
    x = 42,576.48

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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.