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Finding the Fourth Proportional to 103,630.20, 155,509.30 and 41,294.20

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Solution

The fourth proportional to 103,630.20, 155,509.30 and 41,294.20 is: 61,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.20 : 155,509.30 = 41,294.20 : x
  2. Step 2: Convert to fraction form
    103,630.20/155,509.30 = 41,294.20/x
  3. Step 3: Cross multiply
    103,630.20x = 155,509.30 × 41,294.20
  4. Step 4: Simplify right side
    103,630.20x = 6,421,632,136.06
  5. Step 5: Solve for x
    x = 6,421,632,136.06/103,630.20
  6. Step 6: Final answer
    x = 61,966.80

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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.