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Finding the Fourth Proportional to 103,802.49, 155,679.81 and 40,624.11

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Solution

The fourth proportional to 103,802.49, 155,679.81 and 40,624.11 is: 60,926.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,802.49 : 155,679.81 = 40,624.11 : x
  2. Step 2: Convert to fraction form
    103,802.49/155,679.81 = 40,624.11/x
  3. Step 3: Cross multiply
    103,802.49x = 155,679.81 × 40,624.11
  4. Step 4: Simplify right side
    103,802.49x = 6,324,353,726.22
  5. Step 5: Solve for x
    x = 6,324,353,726.22/103,802.49
  6. Step 6: Final answer
    x = 60,926.80

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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.