Home / 90,855.14-136,283.91-28,525.64

Finding the Fourth Proportional to 90,855.14, 136,283.91 and 28,525.64

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Solution

The fourth proportional to 90,855.14, 136,283.91 and 28,525.64 is: 42,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855.14 : 136,283.91 = 28,525.64 : x
  2. Step 2: Convert to fraction form
    90,855.14/136,283.91 = 28,525.64/x
  3. Step 3: Cross multiply
    90,855.14x = 136,283.91 × 28,525.64
  4. Step 4: Simplify right side
    90,855.14x = 3,887,585,754.45
  5. Step 5: Solve for x
    x = 3,887,585,754.45/90,855.14
  6. Step 6: Final answer
    x = 42,788.84

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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.