Home / 42,468.68-63,642.55-31,287.44

Finding the Fourth Proportional to 42,468.68, 63,642.55 and 31,287.44

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Solution

The fourth proportional to 42,468.68, 63,642.55 and 31,287.44 is: 46,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,468.68 : 63,642.55 = 31,287.44 : x
  2. Step 2: Convert to fraction form
    42,468.68/63,642.55 = 31,287.44/x
  3. Step 3: Cross multiply
    42,468.68x = 63,642.55 × 31,287.44
  4. Step 4: Simplify right side
    42,468.68x = 1,991,212,464.57
  5. Step 5: Solve for x
    x = 1,991,212,464.57/42,468.68
  6. Step 6: Final answer
    x = 46,886.61

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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.