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Finding the Fourth Proportional to 69,434.59, 103,542.19 and 68,803.10

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Solution

The fourth proportional to 69,434.59, 103,542.19 and 68,803.10 is: 102,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,434.59 : 103,542.19 = 68,803.10 : x
  2. Step 2: Convert to fraction form
    69,434.59/103,542.19 = 68,803.10/x
  3. Step 3: Cross multiply
    69,434.59x = 103,542.19 × 68,803.10
  4. Step 4: Simplify right side
    69,434.59x = 7,124,023,652.79
  5. Step 5: Solve for x
    x = 7,124,023,652.79/69,434.59
  6. Step 6: Final answer
    x = 102,600.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.