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Finding the Fourth Proportional to 103,532.67, 155,302.49 and 28,646.55

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Solution

The fourth proportional to 103,532.67, 155,302.49 and 28,646.55 is: 42,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,532.67 : 155,302.49 = 28,646.55 : x
  2. Step 2: Convert to fraction form
    103,532.67/155,302.49 = 28,646.55/x
  3. Step 3: Cross multiply
    103,532.67x = 155,302.49 × 28,646.55
  4. Step 4: Simplify right side
    103,532.67x = 4,448,880,616.53
  5. Step 5: Solve for x
    x = 4,448,880,616.53/103,532.67
  6. Step 6: Final answer
    x = 42,970.79

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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.