Home / 92,420.72-138,616.62-30,090.80

Finding the Fourth Proportional to 92,420.72, 138,616.62 and 30,090.80

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Solution

The fourth proportional to 92,420.72, 138,616.62 and 30,090.80 is: 45,131.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,420.72 : 138,616.62 = 30,090.80 : x
  2. Step 2: Convert to fraction form
    92,420.72/138,616.62 = 30,090.80/x
  3. Step 3: Cross multiply
    92,420.72x = 138,616.62 × 30,090.80
  4. Step 4: Simplify right side
    92,420.72x = 4,171,084,989.10
  5. Step 5: Solve for x
    x = 4,171,084,989.10/92,420.72
  6. Step 6: Final answer
    x = 45,131.49

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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.