Home / 85,179.59-127,688.04-31,857.11

Finding the Fourth Proportional to 85,179.59, 127,688.04 and 31,857.11

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Solution

The fourth proportional to 85,179.59, 127,688.04 and 31,857.11 is: 47,755.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,179.59 : 127,688.04 = 31,857.11 : x
  2. Step 2: Convert to fraction form
    85,179.59/127,688.04 = 31,857.11/x
  3. Step 3: Cross multiply
    85,179.59x = 127,688.04 × 31,857.11
  4. Step 4: Simplify right side
    85,179.59x = 4,067,771,776.35
  5. Step 5: Solve for x
    x = 4,067,771,776.35/85,179.59
  6. Step 6: Final answer
    x = 47,755.24

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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.