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Finding the Fourth Proportional to 79,492.73, 119,238.62 and 20,328.30

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Solution

The fourth proportional to 79,492.73, 119,238.62 and 20,328.30 is: 30,492.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.73 : 119,238.62 = 20,328.30 : x
  2. Step 2: Convert to fraction form
    79,492.73/119,238.62 = 20,328.30/x
  3. Step 3: Cross multiply
    79,492.73x = 119,238.62 × 20,328.30
  4. Step 4: Simplify right side
    79,492.73x = 2,423,918,337.30
  5. Step 5: Solve for x
    x = 2,423,918,337.30/79,492.73
  6. Step 6: Final answer
    x = 30,492.33

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1.5x scale

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.