Home / 71,962.88-99,308.52-40,130.96

Finding the Fourth Proportional to 71,962.88, 99,308.52 and 40,130.96

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Solution

The fourth proportional to 71,962.88, 99,308.52 and 40,130.96 is: 55,380.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,962.88 : 99,308.52 = 40,130.96 : x
  2. Step 2: Convert to fraction form
    71,962.88/99,308.52 = 40,130.96/x
  3. Step 3: Cross multiply
    71,962.88x = 99,308.52 × 40,130.96
  4. Step 4: Simplify right side
    71,962.88x = 3,985,346,243.78
  5. Step 5: Solve for x
    x = 3,985,346,243.78/71,962.88
  6. Step 6: Final answer
    x = 55,380.58

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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.