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Finding the Fourth Proportional to 80,842.59, 111,559.88 and 45,030.67

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Solution

The fourth proportional to 80,842.59, 111,559.88 and 45,030.67 is: 62,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,842.59 : 111,559.88 = 45,030.67 : x
  2. Step 2: Convert to fraction form
    80,842.59/111,559.88 = 45,030.67/x
  3. Step 3: Cross multiply
    80,842.59x = 111,559.88 × 45,030.67
  4. Step 4: Simplify right side
    80,842.59x = 5,023,615,975.20
  5. Step 5: Solve for x
    x = 5,023,615,975.20/80,842.59
  6. Step 6: Final answer
    x = 62,140.71

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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.