Home / 75,279.80-103,888.04-42,571.60

Finding the Fourth Proportional to 75,279.80, 103,888.04 and 42,571.60

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Solution

The fourth proportional to 75,279.80, 103,888.04 and 42,571.60 is: 58,749.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.80 : 103,888.04 = 42,571.60 : x
  2. Step 2: Convert to fraction form
    75,279.80/103,888.04 = 42,571.60/x
  3. Step 3: Cross multiply
    75,279.80x = 103,888.04 × 42,571.60
  4. Step 4: Simplify right side
    75,279.80x = 4,422,679,611.09
  5. Step 5: Solve for x
    x = 4,422,679,611.09/75,279.80
  6. Step 6: Final answer
    x = 58,749.88

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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.