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Finding the Fourth Proportional to 67,428.20, 101,166.60 and 28,013.60

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Solution

The fourth proportional to 67,428.20, 101,166.60 and 28,013.60 is: 42,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,428.20 : 101,166.60 = 28,013.60 : x
  2. Step 2: Convert to fraction form
    67,428.20/101,166.60 = 28,013.60/x
  3. Step 3: Cross multiply
    67,428.20x = 101,166.60 × 28,013.60
  4. Step 4: Simplify right side
    67,428.20x = 2,834,040,665.76
  5. Step 5: Solve for x
    x = 2,834,040,665.76/67,428.20
  6. Step 6: Final answer
    x = 42,030.50

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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.