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Finding the Fourth Proportional to 103,328.70, 155,014.65 and 33,215.10

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Solution

The fourth proportional to 103,328.70, 155,014.65 and 33,215.10 is: 49,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,328.70 : 155,014.65 = 33,215.10 : x
  2. Step 2: Convert to fraction form
    103,328.70/155,014.65 = 33,215.10/x
  3. Step 3: Cross multiply
    103,328.70x = 155,014.65 × 33,215.10
  4. Step 4: Simplify right side
    103,328.70x = 5,148,827,101.22
  5. Step 5: Solve for x
    x = 5,148,827,101.22/103,328.70
  6. Step 6: Final answer
    x = 49,829.59

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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.