Home / 80,999.28-121,528.08-28,416.96

Finding the Fourth Proportional to 80,999.28, 121,528.08 and 28,416.96

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Solution

The fourth proportional to 80,999.28, 121,528.08 and 28,416.96 is: 42,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,999.28 : 121,528.08 = 28,416.96 : x
  2. Step 2: Convert to fraction form
    80,999.28/121,528.08 = 28,416.96/x
  3. Step 3: Cross multiply
    80,999.28x = 121,528.08 × 28,416.96
  4. Step 4: Simplify right side
    80,999.28x = 3,453,458,588.24
  5. Step 5: Solve for x
    x = 3,453,458,588.24/80,999.28
  6. Step 6: Final answer
    x = 42,635.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.