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Finding the Fourth Proportional to 67,818, 101,727.02 and 21,070.88

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Solution

The fourth proportional to 67,818, 101,727.02 and 21,070.88 is: 31,606.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,818 : 101,727.02 = 21,070.88 : x
  2. Step 2: Convert to fraction form
    67,818/101,727.02 = 21,070.88/x
  3. Step 3: Cross multiply
    67,818x = 101,727.02 × 21,070.88
  4. Step 4: Simplify right side
    67,818x = 2,143,477,831.18
  5. Step 5: Solve for x
    x = 2,143,477,831.18/67,818
  6. Step 6: Final answer
    x = 31,606.33

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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.