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Finding the Fourth Proportional to 66,339, 99,508.50 and 19,595.52

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Solution

The fourth proportional to 66,339, 99,508.50 and 19,595.52 is: 29,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339 : 99,508.50 = 19,595.52 : x
  2. Step 2: Convert to fraction form
    66,339/99,508.50 = 19,595.52/x
  3. Step 3: Cross multiply
    66,339x = 99,508.50 × 19,595.52
  4. Step 4: Simplify right side
    66,339x = 1,949,920,801.92
  5. Step 5: Solve for x
    x = 1,949,920,801.92/66,339
  6. Step 6: Final answer
    x = 29,393.28

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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.