Home / 67,385.86-101,088.90-21,778.36

Finding the Fourth Proportional to 67,385.86, 101,088.90 and 21,778.36

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Solution

The fourth proportional to 67,385.86, 101,088.90 and 21,778.36 is: 32,670.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,385.86 : 101,088.90 = 21,778.36 : x
  2. Step 2: Convert to fraction form
    67,385.86/101,088.90 = 21,778.36/x
  3. Step 3: Cross multiply
    67,385.86x = 101,088.90 × 21,778.36
  4. Step 4: Simplify right side
    67,385.86x = 2,201,550,456.20
  5. Step 5: Solve for x
    x = 2,201,550,456.20/67,385.86
  6. Step 6: Final answer
    x = 32,670.81

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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.