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Finding the Fourth Proportional to 67,661.40, 101,516.40 and 28,230.60

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Solution

The fourth proportional to 67,661.40, 101,516.40 and 28,230.60 is: 42,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,661.40 : 101,516.40 = 28,230.60 : x
  2. Step 2: Convert to fraction form
    67,661.40/101,516.40 = 28,230.60/x
  3. Step 3: Cross multiply
    67,661.40x = 101,516.40 × 28,230.60
  4. Step 4: Simplify right side
    67,661.40x = 2,865,868,881.84
  5. Step 5: Solve for x
    x = 2,865,868,881.84/67,661.40
  6. Step 6: Final answer
    x = 42,356.04

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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.