Home / 90,803.22-136,205.43-31,640.01

Finding the Fourth Proportional to 90,803.22, 136,205.43 and 31,640.01

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Solution

The fourth proportional to 90,803.22, 136,205.43 and 31,640.01 is: 47,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,803.22 : 136,205.43 = 31,640.01 : x
  2. Step 2: Convert to fraction form
    90,803.22/136,205.43 = 31,640.01/x
  3. Step 3: Cross multiply
    90,803.22x = 136,205.43 × 31,640.01
  4. Step 4: Simplify right side
    90,803.22x = 4,309,541,167.25
  5. Step 5: Solve for x
    x = 4,309,541,167.25/90,803.22
  6. Step 6: Final answer
    x = 47,460.22

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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.