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Finding the Fourth Proportional to 68,278.25, 102,434.66 and 19,030.25

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Solution

The fourth proportional to 68,278.25, 102,434.66 and 19,030.25 is: 28,550.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,278.25 : 102,434.66 = 19,030.25 : x
  2. Step 2: Convert to fraction form
    68,278.25/102,434.66 = 19,030.25/x
  3. Step 3: Cross multiply
    68,278.25x = 102,434.66 × 19,030.25
  4. Step 4: Simplify right side
    68,278.25x = 1,949,357,188.47
  5. Step 5: Solve for x
    x = 1,949,357,188.47/68,278.25
  6. Step 6: Final answer
    x = 28,550.19

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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.