Home / 81,458.24-122,152.80-28,880.96

Finding the Fourth Proportional to 81,458.24, 122,152.80 and 28,880.96

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Solution

The fourth proportional to 81,458.24, 122,152.80 and 28,880.96 is: 43,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458.24 : 122,152.80 = 28,880.96 : x
  2. Step 2: Convert to fraction form
    81,458.24/122,152.80 = 28,880.96/x
  3. Step 3: Cross multiply
    81,458.24x = 122,152.80 × 28,880.96
  4. Step 4: Simplify right side
    81,458.24x = 3,527,890,130.69
  5. Step 5: Solve for x
    x = 3,527,890,130.69/81,458.24
  6. Step 6: Final answer
    x = 43,309.19

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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.