Home / 95,431.18-143,128.30-28,855.71

Finding the Fourth Proportional to 95,431.18, 143,128.30 and 28,855.71

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Solution

The fourth proportional to 95,431.18, 143,128.30 and 28,855.71 is: 43,277.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,431.18 : 143,128.30 = 28,855.71 : x
  2. Step 2: Convert to fraction form
    95,431.18/143,128.30 = 28,855.71/x
  3. Step 3: Cross multiply
    95,431.18x = 143,128.30 × 28,855.71
  4. Step 4: Simplify right side
    95,431.18x = 4,130,068,001.95
  5. Step 5: Solve for x
    x = 4,130,068,001.95/95,431.18
  6. Step 6: Final answer
    x = 43,277.97

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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.