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Finding the Fourth Proportional to 47,992.89, 71,931.02 and 21,326.07

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Solution

The fourth proportional to 47,992.89, 71,931.02 and 21,326.07 is: 31,963.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,992.89 : 71,931.02 = 21,326.07 : x
  2. Step 2: Convert to fraction form
    47,992.89/71,931.02 = 21,326.07/x
  3. Step 3: Cross multiply
    47,992.89x = 71,931.02 × 21,326.07
  4. Step 4: Simplify right side
    47,992.89x = 1,534,005,967.69
  5. Step 5: Solve for x
    x = 1,534,005,967.69/47,992.89
  6. Step 6: Final answer
    x = 31,963.19

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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.