Home / 90,828.70-136,145.85-40,900.30

Finding the Fourth Proportional to 90,828.70, 136,145.85 and 40,900.30

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Solution

The fourth proportional to 90,828.70, 136,145.85 and 40,900.30 is: 61,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828.70 : 136,145.85 = 40,900.30 : x
  2. Step 2: Convert to fraction form
    90,828.70/136,145.85 = 40,900.30/x
  3. Step 3: Cross multiply
    90,828.70x = 136,145.85 × 40,900.30
  4. Step 4: Simplify right side
    90,828.70x = 5,568,406,108.76
  5. Step 5: Solve for x
    x = 5,568,406,108.76/90,828.70
  6. Step 6: Final answer
    x = 61,306.68

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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.