Home / 84,763.08-127,155.78-31,447.80

Finding the Fourth Proportional to 84,763.08, 127,155.78 and 31,447.80

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Solution

The fourth proportional to 84,763.08, 127,155.78 and 31,447.80 is: 47,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,763.08 : 127,155.78 = 31,447.80 : x
  2. Step 2: Convert to fraction form
    84,763.08/127,155.78 = 31,447.80/x
  3. Step 3: Cross multiply
    84,763.08x = 127,155.78 × 31,447.80
  4. Step 4: Simplify right side
    84,763.08x = 3,998,769,538.28
  5. Step 5: Solve for x
    x = 3,998,769,538.28/84,763.08
  6. Step 6: Final answer
    x = 47,175.84

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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.