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Finding the Fourth Proportional to 52,411.78, 78,650.52 and 21,247.12

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Solution

The fourth proportional to 52,411.78, 78,650.52 and 21,247.12 is: 31,884.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,411.78 : 78,650.52 = 21,247.12 : x
  2. Step 2: Convert to fraction form
    52,411.78/78,650.52 = 21,247.12/x
  3. Step 3: Cross multiply
    52,411.78x = 78,650.52 × 21,247.12
  4. Step 4: Simplify right side
    52,411.78x = 1,671,097,036.50
  5. Step 5: Solve for x
    x = 1,671,097,036.50/52,411.78
  6. Step 6: Final answer
    x = 31,884.00

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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.