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Finding the Fourth Proportional to 67,191.52, 92,724.18 and 36,978.79

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Solution

The fourth proportional to 67,191.52, 92,724.18 and 36,978.79 is: 51,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,191.52 : 92,724.18 = 36,978.79 : x
  2. Step 2: Convert to fraction form
    67,191.52/92,724.18 = 36,978.79/x
  3. Step 3: Cross multiply
    67,191.52x = 92,724.18 × 36,978.79
  4. Step 4: Simplify right side
    67,191.52x = 3,428,827,980.14
  5. Step 5: Solve for x
    x = 3,428,827,980.14/67,191.52
  6. Step 6: Final answer
    x = 51,030.67

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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.