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Finding the Fourth Proportional to 67,884.16, 101,840.96 and 28,420.96

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Solution

The fourth proportional to 67,884.16, 101,840.96 and 28,420.96 is: 42,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,884.16 : 101,840.96 = 28,420.96 : x
  2. Step 2: Convert to fraction form
    67,884.16/101,840.96 = 28,420.96/x
  3. Step 3: Cross multiply
    67,884.16x = 101,840.96 × 28,420.96
  4. Step 4: Simplify right side
    67,884.16x = 2,894,417,850.52
  5. Step 5: Solve for x
    x = 2,894,417,850.52/67,884.16
  6. Step 6: Final answer
    x = 42,637.60

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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.