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Finding the Fourth Proportional to 103,538.63, 155,307.95 and 33,428.27

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Solution

The fourth proportional to 103,538.63, 155,307.95 and 33,428.27 is: 50,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,538.63 : 155,307.95 = 33,428.27 : x
  2. Step 2: Convert to fraction form
    103,538.63/155,307.95 = 33,428.27/x
  3. Step 3: Cross multiply
    103,538.63x = 155,307.95 × 33,428.27
  4. Step 4: Simplify right side
    103,538.63x = 5,191,676,432.23
  5. Step 5: Solve for x
    x = 5,191,676,432.23/103,538.63
  6. Step 6: Final answer
    x = 50,142.41

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Similar ratio
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1.5x scale

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.