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Finding the Fourth Proportional to 47,812.78, 65,980.47 and 27,666.87

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Solution

The fourth proportional to 47,812.78, 65,980.47 and 27,666.87 is: 38,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,812.78 : 65,980.47 = 27,666.87 : x
  2. Step 2: Convert to fraction form
    47,812.78/65,980.47 = 27,666.87/x
  3. Step 3: Cross multiply
    47,812.78x = 65,980.47 × 27,666.87
  4. Step 4: Simplify right side
    47,812.78x = 1,825,473,086.03
  5. Step 5: Solve for x
    x = 1,825,473,086.03/47,812.78
  6. Step 6: Final answer
    x = 38,179.61

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1.5x scale

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.