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Finding the Fourth Proportional to 66,978.52, 92,370.28 and 50,023.84

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Solution

The fourth proportional to 66,978.52, 92,370.28 and 50,023.84 is: 68,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978.52 : 92,370.28 = 50,023.84 : x
  2. Step 2: Convert to fraction form
    66,978.52/92,370.28 = 50,023.84/x
  3. Step 3: Cross multiply
    66,978.52x = 92,370.28 × 50,023.84
  4. Step 4: Simplify right side
    66,978.52x = 4,620,716,107.48
  5. Step 5: Solve for x
    x = 4,620,716,107.48/66,978.52
  6. Step 6: Final answer
    x = 68,988.03

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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.