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Finding the Fourth Proportional to 69,432.59, 103,539.21 and 68,801.10

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Solution

The fourth proportional to 69,432.59, 103,539.21 and 68,801.10 is: 102,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,432.59 : 103,539.21 = 68,801.10 : x
  2. Step 2: Convert to fraction form
    69,432.59/103,539.21 = 68,801.10/x
  3. Step 3: Cross multiply
    69,432.59x = 103,539.21 × 68,801.10
  4. Step 4: Simplify right side
    69,432.59x = 7,123,611,281.86
  5. Step 5: Solve for x
    x = 7,123,611,281.86/69,432.59
  6. Step 6: Final answer
    x = 102,597.51

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1.5x scale

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.