Home / 90,145.68-124,396.16-49,857.09

Finding the Fourth Proportional to 90,145.68, 124,396.16 and 49,857.09

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Solution

The fourth proportional to 90,145.68, 124,396.16 and 49,857.09 is: 68,800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,145.68 : 124,396.16 = 49,857.09 : x
  2. Step 2: Convert to fraction form
    90,145.68/124,396.16 = 49,857.09/x
  3. Step 3: Cross multiply
    90,145.68x = 124,396.16 × 49,857.09
  4. Step 4: Simplify right side
    90,145.68x = 6,202,030,295.49
  5. Step 5: Solve for x
    x = 6,202,030,295.49/90,145.68
  6. Step 6: Final answer
    x = 68,800.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.