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Finding the Fourth Proportional to 67,027.80, 100,541.70 and 51,281.40

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Solution

The fourth proportional to 67,027.80, 100,541.70 and 51,281.40 is: 76,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,027.80 : 100,541.70 = 51,281.40 : x
  2. Step 2: Convert to fraction form
    67,027.80/100,541.70 = 51,281.40/x
  3. Step 3: Cross multiply
    67,027.80x = 100,541.70 × 51,281.40
  4. Step 4: Simplify right side
    67,027.80x = 5,155,919,134.38
  5. Step 5: Solve for x
    x = 5,155,919,134.38/67,027.80
  6. Step 6: Final answer
    x = 76,922.10

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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.