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Finding the Fourth Proportional to 57,340.65, 85,969.39 and 28,895.10

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Solution

The fourth proportional to 57,340.65, 85,969.39 and 28,895.10 is: 43,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,340.65 : 85,969.39 = 28,895.10 : x
  2. Step 2: Convert to fraction form
    57,340.65/85,969.39 = 28,895.10/x
  3. Step 3: Cross multiply
    57,340.65x = 85,969.39 × 28,895.10
  4. Step 4: Simplify right side
    57,340.65x = 2,484,094,120.99
  5. Step 5: Solve for x
    x = 2,484,094,120.99/57,340.65
  6. Step 6: Final answer
    x = 43,321.69

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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.