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Finding the Fourth Proportional to 92,051, 138,078.18 and 28,869.72

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Solution

The fourth proportional to 92,051, 138,078.18 and 28,869.72 is: 43,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,051 : 138,078.18 = 28,869.72 : x
  2. Step 2: Convert to fraction form
    92,051/138,078.18 = 28,869.72/x
  3. Step 3: Cross multiply
    92,051x = 138,078.18 × 28,869.72
  4. Step 4: Simplify right side
    92,051x = 3,986,278,394.71
  5. Step 5: Solve for x
    x = 3,986,278,394.71/92,051
  6. Step 6: Final answer
    x = 43,305.11

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1.5x scale

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.