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Finding the Fourth Proportional to 52,579.68, 78,857.64 and 15,139.68

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Solution

The fourth proportional to 52,579.68, 78,857.64 and 15,139.68 is: 22,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,579.68 : 78,857.64 = 15,139.68 : x
  2. Step 2: Convert to fraction form
    52,579.68/78,857.64 = 15,139.68/x
  3. Step 3: Cross multiply
    52,579.68x = 78,857.64 × 15,139.68
  4. Step 4: Simplify right side
    52,579.68x = 1,193,879,435.16
  5. Step 5: Solve for x
    x = 1,193,879,435.16/52,579.68
  6. Step 6: Final answer
    x = 22,706.10

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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.