Home / 57,217.08-78,931.50-49,652.79

Finding the Fourth Proportional to 57,217.08, 78,931.50 and 49,652.79

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Solution

The fourth proportional to 57,217.08, 78,931.50 and 49,652.79 is: 68,496.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,217.08 : 78,931.50 = 49,652.79 : x
  2. Step 2: Convert to fraction form
    57,217.08/78,931.50 = 49,652.79/x
  3. Step 3: Cross multiply
    57,217.08x = 78,931.50 × 49,652.79
  4. Step 4: Simplify right side
    57,217.08x = 3,919,169,193.89
  5. Step 5: Solve for x
    x = 3,919,169,193.89/57,217.08
  6. Step 6: Final answer
    x = 68,496.49

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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.