Home / 57,716.24-86,486.80-42,855.60

Finding the Fourth Proportional to 57,716.24, 86,486.80 and 42,855.60

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Solution

The fourth proportional to 57,716.24, 86,486.80 and 42,855.60 is: 64,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,716.24 : 86,486.80 = 42,855.60 : x
  2. Step 2: Convert to fraction form
    57,716.24/86,486.80 = 42,855.60/x
  3. Step 3: Cross multiply
    57,716.24x = 86,486.80 × 42,855.60
  4. Step 4: Simplify right side
    57,716.24x = 3,706,443,706.08
  5. Step 5: Solve for x
    x = 3,706,443,706.08/57,716.24
  6. Step 6: Final answer
    x = 64,218.38

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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.