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Finding the Fourth Proportional to 47,374.89, 70,982.03 and 28,615.51

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Solution

The fourth proportional to 47,374.89, 70,982.03 and 28,615.51 is: 42,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,374.89 : 70,982.03 = 28,615.51 : x
  2. Step 2: Convert to fraction form
    47,374.89/70,982.03 = 28,615.51/x
  3. Step 3: Cross multiply
    47,374.89x = 70,982.03 × 28,615.51
  4. Step 4: Simplify right side
    47,374.89x = 2,031,186,634.38
  5. Step 5: Solve for x
    x = 2,031,186,634.38/47,374.89
  6. Step 6: Final answer
    x = 42,874.76

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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.