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Finding the Fourth Proportional to 72,698.30, 100,218.50 and 48,127.94

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Solution

The fourth proportional to 72,698.30, 100,218.50 and 48,127.94 is: 66,346.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,698.30 : 100,218.50 = 48,127.94 : x
  2. Step 2: Convert to fraction form
    72,698.30/100,218.50 = 48,127.94/x
  3. Step 3: Cross multiply
    72,698.30x = 100,218.50 × 48,127.94
  4. Step 4: Simplify right side
    72,698.30x = 4,823,309,954.89
  5. Step 5: Solve for x
    x = 4,823,309,954.89/72,698.30
  6. Step 6: Final answer
    x = 66,346.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.