Home / 91,897.60-137,828-25,320.64

Finding the Fourth Proportional to 91,897.60, 137,828 and 25,320.64

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Solution

The fourth proportional to 91,897.60, 137,828 and 25,320.64 is: 37,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,897.60 : 137,828 = 25,320.64 : x
  2. Step 2: Convert to fraction form
    91,897.60/137,828 = 25,320.64/x
  3. Step 3: Cross multiply
    91,897.60x = 137,828 × 25,320.64
  4. Step 4: Simplify right side
    91,897.60x = 3,489,893,169.92
  5. Step 5: Solve for x
    x = 3,489,893,169.92/91,897.60
  6. Step 6: Final answer
    x = 37,975.89

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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.