Home / 74,510.13-111,770.68-21,921.90

Finding the Fourth Proportional to 74,510.13, 111,770.68 and 21,921.90

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Solution

The fourth proportional to 74,510.13, 111,770.68 and 21,921.90 is: 32,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,510.13 : 111,770.68 = 21,921.90 : x
  2. Step 2: Convert to fraction form
    74,510.13/111,770.68 = 21,921.90/x
  3. Step 3: Cross multiply
    74,510.13x = 111,770.68 × 21,921.90
  4. Step 4: Simplify right side
    74,510.13x = 2,450,225,669.89
  5. Step 5: Solve for x
    x = 2,450,225,669.89/74,510.13
  6. Step 6: Final answer
    x = 32,884.46

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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.