Home / 75,039.20-112,558.80-57,543.20

Finding the Fourth Proportional to 75,039.20, 112,558.80 and 57,543.20

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Solution

The fourth proportional to 75,039.20, 112,558.80 and 57,543.20 is: 86,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,039.20 : 112,558.80 = 57,543.20 : x
  2. Step 2: Convert to fraction form
    75,039.20/112,558.80 = 57,543.20/x
  3. Step 3: Cross multiply
    75,039.20x = 112,558.80 × 57,543.20
  4. Step 4: Simplify right side
    75,039.20x = 6,476,993,540.16
  5. Step 5: Solve for x
    x = 6,476,993,540.16/75,039.20
  6. Step 6: Final answer
    x = 86,314.80

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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.