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Finding the Fourth Proportional to 48,398.48, 72,600.92 and 12,859.28

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Solution

The fourth proportional to 48,398.48, 72,600.92 and 12,859.28 is: 19,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,398.48 : 72,600.92 = 12,859.28 : x
  2. Step 2: Convert to fraction form
    48,398.48/72,600.92 = 12,859.28/x
  3. Step 3: Cross multiply
    48,398.48x = 72,600.92 × 12,859.28
  4. Step 4: Simplify right side
    48,398.48x = 933,595,558.54
  5. Step 5: Solve for x
    x = 933,595,558.54/48,398.48
  6. Step 6: Final answer
    x = 19,289.77

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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.