Home / 81,281.13-112,166.31-45,471.43

Finding the Fourth Proportional to 81,281.13, 112,166.31 and 45,471.43

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Solution

The fourth proportional to 81,281.13, 112,166.31 and 45,471.43 is: 62,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.13 : 112,166.31 = 45,471.43 : x
  2. Step 2: Convert to fraction form
    81,281.13/112,166.31 = 45,471.43/x
  3. Step 3: Cross multiply
    81,281.13x = 112,166.31 × 45,471.43
  4. Step 4: Simplify right side
    81,281.13x = 5,100,362,513.52
  5. Step 5: Solve for x
    x = 5,100,362,513.52/81,281.13
  6. Step 6: Final answer
    x = 62,749.65

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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.