Home / 57,947.28-86,905.80-20,503.68

Finding the Fourth Proportional to 57,947.28, 86,905.80 and 20,503.68

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Solution

The fourth proportional to 57,947.28, 86,905.80 and 20,503.68 is: 30,750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,947.28 : 86,905.80 = 20,503.68 : x
  2. Step 2: Convert to fraction form
    57,947.28/86,905.80 = 20,503.68/x
  3. Step 3: Cross multiply
    57,947.28x = 86,905.80 × 20,503.68
  4. Step 4: Simplify right side
    57,947.28x = 1,781,888,713.34
  5. Step 5: Solve for x
    x = 1,781,888,713.34/57,947.28
  6. Step 6: Final answer
    x = 30,750.17

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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.