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Finding the Fourth Proportional to 79,492.96, 119,239.02 and 20,328.52

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Solution

The fourth proportional to 79,492.96, 119,239.02 and 20,328.52 is: 30,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.96 : 119,239.02 = 20,328.52 : x
  2. Step 2: Convert to fraction form
    79,492.96/119,239.02 = 20,328.52/x
  3. Step 3: Cross multiply
    79,492.96x = 119,239.02 × 20,328.52
  4. Step 4: Simplify right side
    79,492.96x = 2,423,952,802.85
  5. Step 5: Solve for x
    x = 2,423,952,802.85/79,492.96
  6. Step 6: Final answer
    x = 30,492.67

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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.