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Finding the Fourth Proportional to 48,654.83, 72,992.11 and 20,574.81

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Solution

The fourth proportional to 48,654.83, 72,992.11 and 20,574.81 is: 30,866.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,654.83 : 72,992.11 = 20,574.81 : x
  2. Step 2: Convert to fraction form
    48,654.83/72,992.11 = 20,574.81/x
  3. Step 3: Cross multiply
    48,654.83x = 72,992.11 × 20,574.81
  4. Step 4: Simplify right side
    48,654.83x = 1,501,798,839.76
  5. Step 5: Solve for x
    x = 1,501,798,839.76/48,654.83
  6. Step 6: Final answer
    x = 30,866.39

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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.