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Finding the Fourth Proportional to 103,641.20, 155,461.80 and 33,570.80

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Solution

The fourth proportional to 103,641.20, 155,461.80 and 33,570.80 is: 50,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,641.20 : 155,461.80 = 33,570.80 : x
  2. Step 2: Convert to fraction form
    103,641.20/155,461.80 = 33,570.80/x
  3. Step 3: Cross multiply
    103,641.20x = 155,461.80 × 33,570.80
  4. Step 4: Simplify right side
    103,641.20x = 5,218,976,995.44
  5. Step 5: Solve for x
    x = 5,218,976,995.44/103,641.20
  6. Step 6: Final answer
    x = 50,356.20

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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.