Home / 79,239.09-118,839.81-31,854.32

Finding the Fourth Proportional to 79,239.09, 118,839.81 and 31,854.32

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Solution

The fourth proportional to 79,239.09, 118,839.81 and 31,854.32 is: 47,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239.09 : 118,839.81 = 31,854.32 : x
  2. Step 2: Convert to fraction form
    79,239.09/118,839.81 = 31,854.32/x
  3. Step 3: Cross multiply
    79,239.09x = 118,839.81 × 31,854.32
  4. Step 4: Simplify right side
    79,239.09x = 3,785,561,177.21
  5. Step 5: Solve for x
    x = 3,785,561,177.21/79,239.09
  6. Step 6: Final answer
    x = 47,773.91

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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.