Home / 57,145.30-85,815.15-42,370.90

Finding the Fourth Proportional to 57,145.30, 85,815.15 and 42,370.90

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Solution

The fourth proportional to 57,145.30, 85,815.15 and 42,370.90 is: 63,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,145.30 : 85,815.15 = 42,370.90 : x
  2. Step 2: Convert to fraction form
    57,145.30/85,815.15 = 42,370.90/x
  3. Step 3: Cross multiply
    57,145.30x = 85,815.15 × 42,370.90
  4. Step 4: Simplify right side
    57,145.30x = 3,636,065,139.14
  5. Step 5: Solve for x
    x = 3,636,065,139.14/57,145.30
  6. Step 6: Final answer
    x = 63,628.42

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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.