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Finding the Fourth Proportional to 47,319, 70,990.50 and 17,736.92

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Solution

The fourth proportional to 47,319, 70,990.50 and 17,736.92 is: 26,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,319 : 70,990.50 = 17,736.92 : x
  2. Step 2: Convert to fraction form
    47,319/70,990.50 = 17,736.92/x
  3. Step 3: Cross multiply
    47,319x = 70,990.50 × 17,736.92
  4. Step 4: Simplify right side
    47,319x = 1,259,152,819.26
  5. Step 5: Solve for x
    x = 1,259,152,819.26/47,319
  6. Step 6: Final answer
    x = 26,609.88

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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.