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Finding the Fourth Proportional to 91,128, 136,692 and 25,464

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Solution

The fourth proportional to 91,128, 136,692 and 25,464 is: 38,196

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,128 : 136,692 = 25,464 : x
  2. Step 2: Convert to fraction form
    91,128/136,692 = 25,464/x
  3. Step 3: Cross multiply
    91,128x = 136,692 × 25,464
  4. Step 4: Simplify right side
    91,128x = 3,480,725,088
  5. Step 5: Solve for x
    x = 3,480,725,088/91,128
  6. Step 6: Final answer
    x = 38,196

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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.