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Finding the Fourth Proportional to 69,811.29, 104,760.68 and 28,258.29

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Solution

The fourth proportional to 69,811.29, 104,760.68 and 28,258.29 is: 42,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,811.29 : 104,760.68 = 28,258.29 : x
  2. Step 2: Convert to fraction form
    69,811.29/104,760.68 = 28,258.29/x
  3. Step 3: Cross multiply
    69,811.29x = 104,760.68 × 28,258.29
  4. Step 4: Simplify right side
    69,811.29x = 2,960,357,534.75
  5. Step 5: Solve for x
    x = 2,960,357,534.75/69,811.29
  6. Step 6: Final answer
    x = 42,405.14

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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.