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Finding the Fourth Proportional to 48,607.85, 72,917.85 and 19,021.86

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Solution

The fourth proportional to 48,607.85, 72,917.85 and 19,021.86 is: 28,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,607.85 : 72,917.85 = 19,021.86 : x
  2. Step 2: Convert to fraction form
    48,607.85/72,917.85 = 19,021.86/x
  3. Step 3: Cross multiply
    48,607.85x = 72,917.85 × 19,021.86
  4. Step 4: Simplify right side
    48,607.85x = 1,387,033,134.20
  5. Step 5: Solve for x
    x = 1,387,033,134.20/48,607.85
  6. Step 6: Final answer
    x = 28,535.17

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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.