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Finding the Fourth Proportional to 69,807.90, 104,719.14 and 40,259.10

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Solution

The fourth proportional to 69,807.90, 104,719.14 and 40,259.10 is: 60,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,807.90 : 104,719.14 = 40,259.10 : x
  2. Step 2: Convert to fraction form
    69,807.90/104,719.14 = 40,259.10/x
  3. Step 3: Cross multiply
    69,807.90x = 104,719.14 × 40,259.10
  4. Step 4: Simplify right side
    69,807.90x = 4,215,898,329.17
  5. Step 5: Solve for x
    x = 4,215,898,329.17/69,807.90
  6. Step 6: Final answer
    x = 60,392.85

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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.