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Finding the Fourth Proportional to 70,299.20, 105,551.20 and 49,614.40

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Solution

The fourth proportional to 70,299.20, 105,551.20 and 49,614.40 is: 74,493.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,299.20 : 105,551.20 = 49,614.40 : x
  2. Step 2: Convert to fraction form
    70,299.20/105,551.20 = 49,614.40/x
  3. Step 3: Cross multiply
    70,299.20x = 105,551.20 × 49,614.40
  4. Step 4: Simplify right side
    70,299.20x = 5,236,859,457.28
  5. Step 5: Solve for x
    x = 5,236,859,457.28/70,299.20
  6. Step 6: Final answer
    x = 74,493.87

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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.