Home / 85,369.11-128,042.42-26,199.83

Finding the Fourth Proportional to 85,369.11, 128,042.42 and 26,199.83

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Solution

The fourth proportional to 85,369.11, 128,042.42 and 26,199.83 is: 39,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,369.11 : 128,042.42 = 26,199.83 : x
  2. Step 2: Convert to fraction form
    85,369.11/128,042.42 = 26,199.83/x
  3. Step 3: Cross multiply
    85,369.11x = 128,042.42 × 26,199.83
  4. Step 4: Simplify right side
    85,369.11x = 3,354,688,865.58
  5. Step 5: Solve for x
    x = 3,354,688,865.58/85,369.11
  6. Step 6: Final answer
    x = 39,296.28

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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.