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Finding the Fourth Proportional to 70,736.76, 106,077.87 and 31,272.21

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Solution

The fourth proportional to 70,736.76, 106,077.87 and 31,272.21 is: 46,896.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,736.76 : 106,077.87 = 31,272.21 : x
  2. Step 2: Convert to fraction form
    70,736.76/106,077.87 = 31,272.21/x
  3. Step 3: Cross multiply
    70,736.76x = 106,077.87 × 31,272.21
  4. Step 4: Simplify right side
    70,736.76x = 3,317,289,426.99
  5. Step 5: Solve for x
    x = 3,317,289,426.99/70,736.76
  6. Step 6: Final answer
    x = 46,896.26

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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.