Home / 67,208.76-100,778.28-19,817.61

Finding the Fourth Proportional to 67,208.76, 100,778.28 and 19,817.61

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Solution

The fourth proportional to 67,208.76, 100,778.28 and 19,817.61 is: 29,716.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.76 : 100,778.28 = 19,817.61 : x
  2. Step 2: Convert to fraction form
    67,208.76/100,778.28 = 19,817.61/x
  3. Step 3: Cross multiply
    67,208.76x = 100,778.28 × 19,817.61
  4. Step 4: Simplify right side
    67,208.76x = 1,997,184,649.51
  5. Step 5: Solve for x
    x = 1,997,184,649.51/67,208.76
  6. Step 6: Final answer
    x = 29,716.14

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1.5x scale

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.