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Finding the Fourth Proportional to 80,615.76, 111,281.04 and 60,530.64

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Solution

The fourth proportional to 80,615.76, 111,281.04 and 60,530.64 is: 83,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.76 : 111,281.04 = 60,530.64 : x
  2. Step 2: Convert to fraction form
    80,615.76/111,281.04 = 60,530.64/x
  3. Step 3: Cross multiply
    80,615.76x = 111,281.04 × 60,530.64
  4. Step 4: Simplify right side
    80,615.76x = 6,735,912,571.07
  5. Step 5: Solve for x
    x = 6,735,912,571.07/80,615.76
  6. Step 6: Final answer
    x = 83,555.78

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1.5x scale

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.