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Finding the Fourth Proportional to 103,702.69, 155,519.44 and 40,506.43

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Solution

The fourth proportional to 103,702.69, 155,519.44 and 40,506.43 is: 60,746.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,702.69 : 155,519.44 = 40,506.43 : x
  2. Step 2: Convert to fraction form
    103,702.69/155,519.44 = 40,506.43/x
  3. Step 3: Cross multiply
    103,702.69x = 155,519.44 × 40,506.43
  4. Step 4: Simplify right side
    103,702.69x = 6,299,537,310.00
  5. Step 5: Solve for x
    x = 6,299,537,310.00/103,702.69
  6. Step 6: Final answer
    x = 60,746.13

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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.