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Finding the Fourth Proportional to 69,863.74, 104,320.40 and 65,917.12

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Solution

The fourth proportional to 69,863.74, 104,320.40 and 65,917.12 is: 98,427.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,863.74 : 104,320.40 = 65,917.12 : x
  2. Step 2: Convert to fraction form
    69,863.74/104,320.40 = 65,917.12/x
  3. Step 3: Cross multiply
    69,863.74x = 104,320.40 × 65,917.12
  4. Step 4: Simplify right side
    69,863.74x = 6,876,500,325.25
  5. Step 5: Solve for x
    x = 6,876,500,325.25/69,863.74
  6. Step 6: Final answer
    x = 98,427.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.