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Finding the Fourth Proportional to 92,154.29, 138,255.57 and 28,971.86

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Solution

The fourth proportional to 92,154.29, 138,255.57 and 28,971.86 is: 43,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,154.29 : 138,255.57 = 28,971.86 : x
  2. Step 2: Convert to fraction form
    92,154.29/138,255.57 = 28,971.86/x
  3. Step 3: Cross multiply
    92,154.29x = 138,255.57 × 28,971.86
  4. Step 4: Simplify right side
    92,154.29x = 4,005,520,326.98
  5. Step 5: Solve for x
    x = 4,005,520,326.98/92,154.29
  6. Step 6: Final answer
    x = 43,465.37

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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.