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Finding the Fourth Proportional to 69,166.60, 103,749.90 and 42,922.60

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Solution

The fourth proportional to 69,166.60, 103,749.90 and 42,922.60 is: 64,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,166.60 : 103,749.90 = 42,922.60 : x
  2. Step 2: Convert to fraction form
    69,166.60/103,749.90 = 42,922.60/x
  3. Step 3: Cross multiply
    69,166.60x = 103,749.90 × 42,922.60
  4. Step 4: Simplify right side
    69,166.60x = 4,453,215,457.74
  5. Step 5: Solve for x
    x = 4,453,215,457.74/69,166.60
  6. Step 6: Final answer
    x = 64,383.90

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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.