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Finding the Fourth Proportional to 67,356, 92,903.22 and 57,214.08

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Solution

The fourth proportional to 67,356, 92,903.22 and 57,214.08 is: 78,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,356 : 92,903.22 = 57,214.08 : x
  2. Step 2: Convert to fraction form
    67,356/92,903.22 = 57,214.08/x
  3. Step 3: Cross multiply
    67,356x = 92,903.22 × 57,214.08
  4. Step 4: Simplify right side
    67,356x = 5,315,372,261.34
  5. Step 5: Solve for x
    x = 5,315,372,261.34/67,356
  6. Step 6: Final answer
    x = 78,914.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.