Home / 84,153.42-126,252.09-31,563.90

Finding the Fourth Proportional to 84,153.42, 126,252.09 and 31,563.90

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Solution

The fourth proportional to 84,153.42, 126,252.09 and 31,563.90 is: 47,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,153.42 : 126,252.09 = 31,563.90 : x
  2. Step 2: Convert to fraction form
    84,153.42/126,252.09 = 31,563.90/x
  3. Step 3: Cross multiply
    84,153.42x = 126,252.09 × 31,563.90
  4. Step 4: Simplify right side
    84,153.42x = 3,985,008,343.55
  5. Step 5: Solve for x
    x = 3,985,008,343.55/84,153.42
  6. Step 6: Final answer
    x = 47,354.09

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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.