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Finding the Fourth Proportional to 74,763.84, 103,168.88 and 42,063.18

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Solution

The fourth proportional to 74,763.84, 103,168.88 and 42,063.18 is: 58,044.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,763.84 : 103,168.88 = 42,063.18 : x
  2. Step 2: Convert to fraction form
    74,763.84/103,168.88 = 42,063.18/x
  3. Step 3: Cross multiply
    74,763.84x = 103,168.88 × 42,063.18
  4. Step 4: Simplify right side
    74,763.84x = 4,339,611,169.84
  5. Step 5: Solve for x
    x = 4,339,611,169.84/74,763.84
  6. Step 6: Final answer
    x = 58,044.25

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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.