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Finding the Fourth Proportional to 67,881.76, 101,702.16 and 28,351.88

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Solution

The fourth proportional to 67,881.76, 101,702.16 and 28,351.88 is: 42,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,881.76 : 101,702.16 = 28,351.88 : x
  2. Step 2: Convert to fraction form
    67,881.76/101,702.16 = 28,351.88/x
  3. Step 3: Cross multiply
    67,881.76x = 101,702.16 × 28,351.88
  4. Step 4: Simplify right side
    67,881.76x = 2,883,447,436.06
  5. Step 5: Solve for x
    x = 2,883,447,436.06/67,881.76
  6. Step 6: Final answer
    x = 42,477.50

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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.