Home / 67,133.48-100,693.68-20,386.76

Finding the Fourth Proportional to 67,133.48, 100,693.68 and 20,386.76

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Solution

The fourth proportional to 67,133.48, 100,693.68 and 20,386.76 is: 30,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,133.48 : 100,693.68 = 20,386.76 : x
  2. Step 2: Convert to fraction form
    67,133.48/100,693.68 = 20,386.76/x
  3. Step 3: Cross multiply
    67,133.48x = 100,693.68 × 20,386.76
  4. Step 4: Simplify right side
    67,133.48x = 2,052,817,887.68
  5. Step 5: Solve for x
    x = 2,052,817,887.68/67,133.48
  6. Step 6: Final answer
    x = 30,578.15

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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.