Home / 51,431.14-70,980.85-28,775.87

Finding the Fourth Proportional to 51,431.14, 70,980.85 and 28,775.87

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Solution

The fourth proportional to 51,431.14, 70,980.85 and 28,775.87 is: 39,713.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.14 : 70,980.85 = 28,775.87 : x
  2. Step 2: Convert to fraction form
    51,431.14/70,980.85 = 28,775.87/x
  3. Step 3: Cross multiply
    51,431.14x = 70,980.85 × 28,775.87
  4. Step 4: Simplify right side
    51,431.14x = 2,042,535,712.09
  5. Step 5: Solve for x
    x = 2,042,535,712.09/51,431.14
  6. Step 6: Final answer
    x = 39,713.99

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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.