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Finding the Fourth Proportional to 66,339.96, 99,510 and 19,625.64

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Solution

The fourth proportional to 66,339.96, 99,510 and 19,625.64 is: 29,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339.96 : 99,510 = 19,625.64 : x
  2. Step 2: Convert to fraction form
    66,339.96/99,510 = 19,625.64/x
  3. Step 3: Cross multiply
    66,339.96x = 99,510 × 19,625.64
  4. Step 4: Simplify right side
    66,339.96x = 1,952,947,436.40
  5. Step 5: Solve for x
    x = 1,952,947,436.40/66,339.96
  6. Step 6: Final answer
    x = 29,438.48

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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.