Home / 90,795.21-136,193.42-31,632

Finding the Fourth Proportional to 90,795.21, 136,193.42 and 31,632

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Solution

The fourth proportional to 90,795.21, 136,193.42 and 31,632 is: 47,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,795.21 : 136,193.42 = 31,632 : x
  2. Step 2: Convert to fraction form
    90,795.21/136,193.42 = 31,632/x
  3. Step 3: Cross multiply
    90,795.21x = 136,193.42 × 31,632
  4. Step 4: Simplify right side
    90,795.21x = 4,308,070,261.44
  5. Step 5: Solve for x
    x = 4,308,070,261.44/90,795.21
  6. Step 6: Final answer
    x = 47,448.21

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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.