Home / 81,582.16-122,373.24-28,993.72

Finding the Fourth Proportional to 81,582.16, 122,373.24 and 28,993.72

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Solution

The fourth proportional to 81,582.16, 122,373.24 and 28,993.72 is: 43,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.16 : 122,373.24 = 28,993.72 : x
  2. Step 2: Convert to fraction form
    81,582.16/122,373.24 = 28,993.72/x
  3. Step 3: Cross multiply
    81,582.16x = 122,373.24 × 28,993.72
  4. Step 4: Simplify right side
    81,582.16x = 3,548,055,150.12
  5. Step 5: Solve for x
    x = 3,548,055,150.12/81,582.16
  6. Step 6: Final answer
    x = 43,490.58

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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.