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Finding the Fourth Proportional to 47,999.75, 72,009.86 and 18,417.33

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Solution

The fourth proportional to 47,999.75, 72,009.86 and 18,417.33 is: 27,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,999.75 : 72,009.86 = 18,417.33 : x
  2. Step 2: Convert to fraction form
    47,999.75/72,009.86 = 18,417.33/x
  3. Step 3: Cross multiply
    47,999.75x = 72,009.86 × 18,417.33
  4. Step 4: Simplify right side
    47,999.75x = 1,326,229,262.79
  5. Step 5: Solve for x
    x = 1,326,229,262.79/47,999.75
  6. Step 6: Final answer
    x = 27,629.92

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1.5x scale

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.