Home / 81,442.08-112,388.99-45,632.79

Finding the Fourth Proportional to 81,442.08, 112,388.99 and 45,632.79

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Solution

The fourth proportional to 81,442.08, 112,388.99 and 45,632.79 is: 62,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,442.08 : 112,388.99 = 45,632.79 : x
  2. Step 2: Convert to fraction form
    81,442.08/112,388.99 = 45,632.79/x
  3. Step 3: Cross multiply
    81,442.08x = 112,388.99 × 45,632.79
  4. Step 4: Simplify right side
    81,442.08x = 5,128,622,950.82
  5. Step 5: Solve for x
    x = 5,128,622,950.82/81,442.08
  6. Step 6: Final answer
    x = 62,972.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.