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Finding the Fourth Proportional to 52,445, 78,680.82 and 15,509

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Solution

The fourth proportional to 52,445, 78,680.82 and 15,509 is: 23,267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,445 : 78,680.82 = 15,509 : x
  2. Step 2: Convert to fraction form
    52,445/78,680.82 = 15,509/x
  3. Step 3: Cross multiply
    52,445x = 78,680.82 × 15,509
  4. Step 4: Simplify right side
    52,445x = 1,220,260,837.38
  5. Step 5: Solve for x
    x = 1,220,260,837.38/52,445
  6. Step 6: Final answer
    x = 23,267.44

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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.