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Finding the Fourth Proportional to 47,989.71, 72,047.03 and 36,904.19

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Solution

The fourth proportional to 47,989.71, 72,047.03 and 36,904.19 is: 55,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,989.71 : 72,047.03 = 36,904.19 : x
  2. Step 2: Convert to fraction form
    47,989.71/72,047.03 = 36,904.19/x
  3. Step 3: Cross multiply
    47,989.71x = 72,047.03 × 36,904.19
  4. Step 4: Simplify right side
    47,989.71x = 2,658,836,739.30
  5. Step 5: Solve for x
    x = 2,658,836,739.30/47,989.71
  6. Step 6: Final answer
    x = 55,404.31

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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.