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Finding the Fourth Proportional to 69,080.40, 103,626.45 and 19,160.49

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Solution

The fourth proportional to 69,080.40, 103,626.45 and 19,160.49 is: 28,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,080.40 : 103,626.45 = 19,160.49 : x
  2. Step 2: Convert to fraction form
    69,080.40/103,626.45 = 19,160.49/x
  3. Step 3: Cross multiply
    69,080.40x = 103,626.45 × 19,160.49
  4. Step 4: Simplify right side
    69,080.40x = 1,985,533,558.96
  5. Step 5: Solve for x
    x = 1,985,533,558.96/69,080.40
  6. Step 6: Final answer
    x = 28,742.36

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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.