Home / 90,145.10-124,398.42-49,860.56

Finding the Fourth Proportional to 90,145.10, 124,398.42 and 49,860.56

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Solution

The fourth proportional to 90,145.10, 124,398.42 and 49,860.56 is: 68,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,145.10 : 124,398.42 = 49,860.56 : x
  2. Step 2: Convert to fraction form
    90,145.10/124,398.42 = 49,860.56/x
  3. Step 3: Cross multiply
    90,145.10x = 124,398.42 × 49,860.56
  4. Step 4: Simplify right side
    90,145.10x = 6,202,574,884.32
  5. Step 5: Solve for x
    x = 6,202,574,884.32/90,145.10
  6. Step 6: Final answer
    x = 68,806.57

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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.