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Finding the Fourth Proportional to 52,520.72, 78,792.80 and 19,240.08

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Solution

The fourth proportional to 52,520.72, 78,792.80 and 19,240.08 is: 28,864.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,520.72 : 78,792.80 = 19,240.08 : x
  2. Step 2: Convert to fraction form
    52,520.72/78,792.80 = 19,240.08/x
  3. Step 3: Cross multiply
    52,520.72x = 78,792.80 × 19,240.08
  4. Step 4: Simplify right side
    52,520.72x = 1,515,979,775.42
  5. Step 5: Solve for x
    x = 1,515,979,775.42/52,520.72
  6. Step 6: Final answer
    x = 28,864.41

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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.