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Finding the Fourth Proportional to 79,508.95, 119,263.32 and 20,344.64

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Solution

The fourth proportional to 79,508.95, 119,263.32 and 20,344.64 is: 30,516.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,508.95 : 119,263.32 = 20,344.64 : x
  2. Step 2: Convert to fraction form
    79,508.95/119,263.32 = 20,344.64/x
  3. Step 3: Cross multiply
    79,508.95x = 119,263.32 × 20,344.64
  4. Step 4: Simplify right side
    79,508.95x = 2,426,368,714.29
  5. Step 5: Solve for x
    x = 2,426,368,714.29/79,508.95
  6. Step 6: Final answer
    x = 30,516.93

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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.