Home / 90,781.12-136,172.60-27,611.48

Finding the Fourth Proportional to 90,781.12, 136,172.60 and 27,611.48

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Solution

The fourth proportional to 90,781.12, 136,172.60 and 27,611.48 is: 41,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,781.12 : 136,172.60 = 27,611.48 : x
  2. Step 2: Convert to fraction form
    90,781.12/136,172.60 = 27,611.48/x
  3. Step 3: Cross multiply
    90,781.12x = 136,172.60 × 27,611.48
  4. Step 4: Simplify right side
    90,781.12x = 3,759,927,021.45
  5. Step 5: Solve for x
    x = 3,759,927,021.45/90,781.12
  6. Step 6: Final answer
    x = 41,417.50

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1.5x scale

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.