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Finding the Fourth Proportional to 80,839.80, 121,259.70 and 41,383.80

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Solution

The fourth proportional to 80,839.80, 121,259.70 and 41,383.80 is: 62,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,839.80 : 121,259.70 = 41,383.80 : x
  2. Step 2: Convert to fraction form
    80,839.80/121,259.70 = 41,383.80/x
  3. Step 3: Cross multiply
    80,839.80x = 121,259.70 × 41,383.80
  4. Step 4: Simplify right side
    80,839.80x = 5,018,187,172.86
  5. Step 5: Solve for x
    x = 5,018,187,172.86/80,839.80
  6. Step 6: Final answer
    x = 62,075.70

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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.