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Finding the Fourth Proportional to 69,247.71, 103,851.06 and 19,315.76

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Solution

The fourth proportional to 69,247.71, 103,851.06 and 19,315.76 is: 28,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,247.71 : 103,851.06 = 19,315.76 : x
  2. Step 2: Convert to fraction form
    69,247.71/103,851.06 = 19,315.76/x
  3. Step 3: Cross multiply
    69,247.71x = 103,851.06 × 19,315.76
  4. Step 4: Simplify right side
    69,247.71x = 2,005,962,150.71
  5. Step 5: Solve for x
    x = 2,005,962,150.71/69,247.71
  6. Step 6: Final answer
    x = 28,967.92

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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.