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Finding the Fourth Proportional to 36,070.90, 49,770.29 and 21,158.90

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Solution

The fourth proportional to 36,070.90, 49,770.29 and 21,158.90 is: 29,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,070.90 : 49,770.29 = 21,158.90 : x
  2. Step 2: Convert to fraction form
    36,070.90/49,770.29 = 21,158.90/x
  3. Step 3: Cross multiply
    36,070.90x = 49,770.29 × 21,158.90
  4. Step 4: Simplify right side
    36,070.90x = 1,053,084,589.08
  5. Step 5: Solve for x
    x = 1,053,084,589.08/36,070.90
  6. Step 6: Final answer
    x = 29,194.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.