Home / 84,769.87-127,133.39-31,432.54

Finding the Fourth Proportional to 84,769.87, 127,133.39 and 31,432.54

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Solution

The fourth proportional to 84,769.87, 127,133.39 and 31,432.54 is: 47,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,769.87 : 127,133.39 = 31,432.54 : x
  2. Step 2: Convert to fraction form
    84,769.87/127,133.39 = 31,432.54/x
  3. Step 3: Cross multiply
    84,769.87x = 127,133.39 × 31,432.54
  4. Step 4: Simplify right side
    84,769.87x = 3,996,125,366.51
  5. Step 5: Solve for x
    x = 3,996,125,366.51/84,769.87
  6. Step 6: Final answer
    x = 47,140.87

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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.