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Finding the Fourth Proportional to 70,901.64, 106,352.52 and 18,311.13

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Solution

The fourth proportional to 70,901.64, 106,352.52 and 18,311.13 is: 27,466.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,901.64 : 106,352.52 = 18,311.13 : x
  2. Step 2: Convert to fraction form
    70,901.64/106,352.52 = 18,311.13/x
  3. Step 3: Cross multiply
    70,901.64x = 106,352.52 × 18,311.13
  4. Step 4: Simplify right side
    70,901.64x = 1,947,434,819.55
  5. Step 5: Solve for x
    x = 1,947,434,819.55/70,901.64
  6. Step 6: Final answer
    x = 27,466.71

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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.