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Finding the Fourth Proportional to 103,642.98, 155,479.05 and 51,052.92

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Solution

The fourth proportional to 103,642.98, 155,479.05 and 51,052.92 is: 76,586.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,642.98 : 155,479.05 = 51,052.92 : x
  2. Step 2: Convert to fraction form
    103,642.98/155,479.05 = 51,052.92/x
  3. Step 3: Cross multiply
    103,642.98x = 155,479.05 × 51,052.92
  4. Step 4: Simplify right side
    103,642.98x = 7,937,659,501.33
  5. Step 5: Solve for x
    x = 7,937,659,501.33/103,642.98
  6. Step 6: Final answer
    x = 76,586.56

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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.