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Finding the Fourth Proportional to 70,077.05, 105,146.36 and 36,789.39

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Solution

The fourth proportional to 70,077.05, 105,146.36 and 36,789.39 is: 55,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,077.05 : 105,146.36 = 36,789.39 : x
  2. Step 2: Convert to fraction form
    70,077.05/105,146.36 = 36,789.39/x
  3. Step 3: Cross multiply
    70,077.05x = 105,146.36 × 36,789.39
  4. Step 4: Simplify right side
    70,077.05x = 3,868,270,261.17
  5. Step 5: Solve for x
    x = 3,868,270,261.17/70,077.05
  6. Step 6: Final answer
    x = 55,200.25

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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.