Home / 90,531.72-135,781.91-23,972.80

Finding the Fourth Proportional to 90,531.72, 135,781.91 and 23,972.80

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Solution

The fourth proportional to 90,531.72, 135,781.91 and 23,972.80 is: 35,955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,531.72 : 135,781.91 = 23,972.80 : x
  2. Step 2: Convert to fraction form
    90,531.72/135,781.91 = 23,972.80/x
  3. Step 3: Cross multiply
    90,531.72x = 135,781.91 × 23,972.80
  4. Step 4: Simplify right side
    90,531.72x = 3,255,072,572.05
  5. Step 5: Solve for x
    x = 3,255,072,572.05/90,531.72
  6. Step 6: Final answer
    x = 35,955.05

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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.