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Finding the Fourth Proportional to 67,926.39, 101,856.81 and 28,472.91

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Solution

The fourth proportional to 67,926.39, 101,856.81 and 28,472.91 is: 42,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,926.39 : 101,856.81 = 28,472.91 : x
  2. Step 2: Convert to fraction form
    67,926.39/101,856.81 = 28,472.91/x
  3. Step 3: Cross multiply
    67,926.39x = 101,856.81 × 28,472.91
  4. Step 4: Simplify right side
    67,926.39x = 2,900,159,784.02
  5. Step 5: Solve for x
    x = 2,900,159,784.02/67,926.39
  6. Step 6: Final answer
    x = 42,695.63

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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.