Home / 90,522.88-135,758.40-31,343.20

Finding the Fourth Proportional to 90,522.88, 135,758.40 and 31,343.20

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Solution

The fourth proportional to 90,522.88, 135,758.40 and 31,343.20 is: 47,005.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,522.88 : 135,758.40 = 31,343.20 : x
  2. Step 2: Convert to fraction form
    90,522.88/135,758.40 = 31,343.20/x
  3. Step 3: Cross multiply
    90,522.88x = 135,758.40 × 31,343.20
  4. Step 4: Simplify right side
    90,522.88x = 4,255,102,682.88
  5. Step 5: Solve for x
    x = 4,255,102,682.88/90,522.88
  6. Step 6: Final answer
    x = 47,005.83

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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.