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Finding the Fourth Proportional to 86,740.78, 119,706.86 and 52,743.64

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Solution

The fourth proportional to 86,740.78, 119,706.86 and 52,743.64 is: 72,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.78 : 119,706.86 = 52,743.64 : x
  2. Step 2: Convert to fraction form
    86,740.78/119,706.86 = 52,743.64/x
  3. Step 3: Cross multiply
    86,740.78x = 119,706.86 × 52,743.64
  4. Step 4: Simplify right side
    86,740.78x = 6,313,775,529.37
  5. Step 5: Solve for x
    x = 6,313,775,529.37/86,740.78
  6. Step 6: Final answer
    x = 72,789.01

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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.