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Finding the Fourth Proportional to 47,710.90, 71,566.35 and 12,654.10

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Solution

The fourth proportional to 47,710.90, 71,566.35 and 12,654.10 is: 18,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,710.90 : 71,566.35 = 12,654.10 : x
  2. Step 2: Convert to fraction form
    47,710.90/71,566.35 = 12,654.10/x
  3. Step 3: Cross multiply
    47,710.90x = 71,566.35 × 12,654.10
  4. Step 4: Simplify right side
    47,710.90x = 905,607,749.54
  5. Step 5: Solve for x
    x = 905,607,749.54/47,710.90
  6. Step 6: Final answer
    x = 18,981.15

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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.