Home / 87,855.53-121,240.45-47,569.33

Finding the Fourth Proportional to 87,855.53, 121,240.45 and 47,569.33

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Solution

The fourth proportional to 87,855.53, 121,240.45 and 47,569.33 is: 65,645.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.53 : 121,240.45 = 47,569.33 : x
  2. Step 2: Convert to fraction form
    87,855.53/121,240.45 = 47,569.33/x
  3. Step 3: Cross multiply
    87,855.53x = 121,240.45 × 47,569.33
  4. Step 4: Simplify right side
    87,855.53x = 5,767,326,975.40
  5. Step 5: Solve for x
    x = 5,767,326,975.40/87,855.53
  6. Step 6: Final answer
    x = 65,645.58

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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.