Home / 81,280.20-112,166.84-45,470.81

Finding the Fourth Proportional to 81,280.20, 112,166.84 and 45,470.81

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Solution

The fourth proportional to 81,280.20, 112,166.84 and 45,470.81 is: 62,749.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.20 : 112,166.84 = 45,470.81 : x
  2. Step 2: Convert to fraction form
    81,280.20/112,166.84 = 45,470.81/x
  3. Step 3: Cross multiply
    81,280.20x = 112,166.84 × 45,470.81
  4. Step 4: Simplify right side
    81,280.20x = 5,100,316,281.75
  5. Step 5: Solve for x
    x = 5,100,316,281.75/81,280.20
  6. Step 6: Final answer
    x = 62,749.80

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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.