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Finding the Fourth Proportional to 80,646.93, 121,019.04 and 28,093.32

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Solution

The fourth proportional to 80,646.93, 121,019.04 and 28,093.32 is: 42,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,646.93 : 121,019.04 = 28,093.32 : x
  2. Step 2: Convert to fraction form
    80,646.93/121,019.04 = 28,093.32/x
  3. Step 3: Cross multiply
    80,646.93x = 121,019.04 × 28,093.32
  4. Step 4: Simplify right side
    80,646.93x = 3,399,826,616.81
  5. Step 5: Solve for x
    x = 3,399,826,616.81/80,646.93
  6. Step 6: Final answer
    x = 42,156.93

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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.