Home / 76,301.02-114,449.10-20,139.40

Finding the Fourth Proportional to 76,301.02, 114,449.10 and 20,139.40

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Solution

The fourth proportional to 76,301.02, 114,449.10 and 20,139.40 is: 30,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,301.02 : 114,449.10 = 20,139.40 : x
  2. Step 2: Convert to fraction form
    76,301.02/114,449.10 = 20,139.40/x
  3. Step 3: Cross multiply
    76,301.02x = 114,449.10 × 20,139.40
  4. Step 4: Simplify right side
    76,301.02x = 2,304,936,204.54
  5. Step 5: Solve for x
    x = 2,304,936,204.54/76,301.02
  6. Step 6: Final answer
    x = 30,208.46

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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.