Home / 57,815.20-86,742.24-22,758.40

Finding the Fourth Proportional to 57,815.20, 86,742.24 and 22,758.40

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Solution

The fourth proportional to 57,815.20, 86,742.24 and 22,758.40 is: 34,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,815.20 : 86,742.24 = 22,758.40 : x
  2. Step 2: Convert to fraction form
    57,815.20/86,742.24 = 22,758.40/x
  3. Step 3: Cross multiply
    57,815.20x = 86,742.24 × 22,758.40
  4. Step 4: Simplify right side
    57,815.20x = 1,974,114,594.82
  5. Step 5: Solve for x
    x = 1,974,114,594.82/57,815.20
  6. Step 6: Final answer
    x = 34,145.25

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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.