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Finding the Fourth Proportional to 70,880.20, 97,819.10 and 39,049.10

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Solution

The fourth proportional to 70,880.20, 97,819.10 and 39,049.10 is: 53,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.20 : 97,819.10 = 39,049.10 : x
  2. Step 2: Convert to fraction form
    70,880.20/97,819.10 = 39,049.10/x
  3. Step 3: Cross multiply
    70,880.20x = 97,819.10 × 39,049.10
  4. Step 4: Simplify right side
    70,880.20x = 3,819,747,817.81
  5. Step 5: Solve for x
    x = 3,819,747,817.81/70,880.20
  6. Step 6: Final answer
    x = 53,890.20

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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.