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Finding the Fourth Proportional to 69,961.28, 104,910.95 and 20,030.00

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Solution

The fourth proportional to 69,961.28, 104,910.95 and 20,030.00 is: 30,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,961.28 : 104,910.95 = 20,030.00 : x
  2. Step 2: Convert to fraction form
    69,961.28/104,910.95 = 20,030.00/x
  3. Step 3: Cross multiply
    69,961.28x = 104,910.95 × 20,030.00
  4. Step 4: Simplify right side
    69,961.28x = 2,101,365,854.02
  5. Step 5: Solve for x
    x = 2,101,365,854.02/69,961.28
  6. Step 6: Final answer
    x = 30,036.13

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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.