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Finding the Fourth Proportional to 69,135.90, 103,630.95 and 26,999.70

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Solution

The fourth proportional to 69,135.90, 103,630.95 and 26,999.70 is: 40,471.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,135.90 : 103,630.95 = 26,999.70 : x
  2. Step 2: Convert to fraction form
    69,135.90/103,630.95 = 26,999.70/x
  3. Step 3: Cross multiply
    69,135.90x = 103,630.95 × 26,999.70
  4. Step 4: Simplify right side
    69,135.90x = 2,798,004,560.72
  5. Step 5: Solve for x
    x = 2,798,004,560.72/69,135.90
  6. Step 6: Final answer
    x = 40,471.08

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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.