Home / 81,279.95-112,166.49-45,470.56

Finding the Fourth Proportional to 81,279.95, 112,166.49 and 45,470.56

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Solution

The fourth proportional to 81,279.95, 112,166.49 and 45,470.56 is: 62,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.95 : 112,166.49 = 45,470.56 : x
  2. Step 2: Convert to fraction form
    81,279.95/112,166.49 = 45,470.56/x
  3. Step 3: Cross multiply
    81,279.95x = 112,166.49 × 45,470.56
  4. Step 4: Simplify right side
    81,279.95x = 5,100,272,552.70
  5. Step 5: Solve for x
    x = 5,100,272,552.70/81,279.95
  6. Step 6: Final answer
    x = 62,749.46

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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.