Home / 55,980.37-83,938.96-20,905.75

Finding the Fourth Proportional to 55,980.37, 83,938.96 and 20,905.75

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Solution

The fourth proportional to 55,980.37, 83,938.96 and 20,905.75 is: 31,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,980.37 : 83,938.96 = 20,905.75 : x
  2. Step 2: Convert to fraction form
    55,980.37/83,938.96 = 20,905.75/x
  3. Step 3: Cross multiply
    55,980.37x = 83,938.96 × 20,905.75
  4. Step 4: Simplify right side
    55,980.37x = 1,754,806,913.02
  5. Step 5: Solve for x
    x = 1,754,806,913.02/55,980.37
  6. Step 6: Final answer
    x = 31,346.83

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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.