Home / 90,892.98-136,401.74-31,728.66

Finding the Fourth Proportional to 90,892.98, 136,401.74 and 31,728.66

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Solution

The fourth proportional to 90,892.98, 136,401.74 and 31,728.66 is: 47,614.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892.98 : 136,401.74 = 31,728.66 : x
  2. Step 2: Convert to fraction form
    90,892.98/136,401.74 = 31,728.66/x
  3. Step 3: Cross multiply
    90,892.98x = 136,401.74 × 31,728.66
  4. Step 4: Simplify right side
    90,892.98x = 4,327,844,431.87
  5. Step 5: Solve for x
    x = 4,327,844,431.87/90,892.98
  6. Step 6: Final answer
    x = 47,614.73

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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.