Home / 91,167.47-136,746.26-27,987.61

Finding the Fourth Proportional to 91,167.47, 136,746.26 and 27,987.61

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Solution

The fourth proportional to 91,167.47, 136,746.26 and 27,987.61 is: 41,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,167.47 : 136,746.26 = 27,987.61 : x
  2. Step 2: Convert to fraction form
    91,167.47/136,746.26 = 27,987.61/x
  3. Step 3: Cross multiply
    91,167.47x = 136,746.26 × 27,987.61
  4. Step 4: Simplify right side
    91,167.47x = 3,827,200,721.94
  5. Step 5: Solve for x
    x = 3,827,200,721.94/91,167.47
  6. Step 6: Final answer
    x = 41,979.89

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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.