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Finding the Fourth Proportional to 69,008.90, 103,574.10 and 40,893.80

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Solution

The fourth proportional to 69,008.90, 103,574.10 and 40,893.80 is: 61,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,008.90 : 103,574.10 = 40,893.80 : x
  2. Step 2: Convert to fraction form
    69,008.90/103,574.10 = 40,893.80/x
  3. Step 3: Cross multiply
    69,008.90x = 103,574.10 × 40,893.80
  4. Step 4: Simplify right side
    69,008.90x = 4,235,538,530.58
  5. Step 5: Solve for x
    x = 4,235,538,530.58/69,008.90
  6. Step 6: Final answer
    x = 61,376.70

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1.5x scale

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.