Home / 57,213.30-78,957.06-35,715.78

Finding the Fourth Proportional to 57,213.30, 78,957.06 and 35,715.78

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Solution

The fourth proportional to 57,213.30, 78,957.06 and 35,715.78 is: 49,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,213.30 : 78,957.06 = 35,715.78 : x
  2. Step 2: Convert to fraction form
    57,213.30/78,957.06 = 35,715.78/x
  3. Step 3: Cross multiply
    57,213.30x = 78,957.06 × 35,715.78
  4. Step 4: Simplify right side
    57,213.30x = 2,820,012,984.41
  5. Step 5: Solve for x
    x = 2,820,012,984.41/57,213.30
  6. Step 6: Final answer
    x = 49,289.47

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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.