Home / 61,931.97-85,136.90-53,286.30

Finding the Fourth Proportional to 61,931.97, 85,136.90 and 53,286.30

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Solution

The fourth proportional to 61,931.97, 85,136.90 and 53,286.30 is: 73,251.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,931.97 : 85,136.90 = 53,286.30 : x
  2. Step 2: Convert to fraction form
    61,931.97/85,136.90 = 53,286.30/x
  3. Step 3: Cross multiply
    61,931.97x = 85,136.90 × 53,286.30
  4. Step 4: Simplify right side
    61,931.97x = 4,536,630,128.04
  5. Step 5: Solve for x
    x = 4,536,630,128.04/61,931.97
  6. Step 6: Final answer
    x = 73,251.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.