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Finding the Fourth Proportional to 103,617.68, 155,426.52 and 41,288.72

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Solution

The fourth proportional to 103,617.68, 155,426.52 and 41,288.72 is: 61,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.68 : 155,426.52 = 41,288.72 : x
  2. Step 2: Convert to fraction form
    103,617.68/155,426.52 = 41,288.72/x
  3. Step 3: Cross multiply
    103,617.68x = 155,426.52 × 41,288.72
  4. Step 4: Simplify right side
    103,617.68x = 6,417,362,064.85
  5. Step 5: Solve for x
    x = 6,417,362,064.85/103,617.68
  6. Step 6: Final answer
    x = 61,933.08

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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.