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Finding the Fourth Proportional to 66,473.88, 99,710.76 and 19,726.75

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Solution

The fourth proportional to 66,473.88, 99,710.76 and 19,726.75 is: 29,590.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473.88 : 99,710.76 = 19,726.75 : x
  2. Step 2: Convert to fraction form
    66,473.88/99,710.76 = 19,726.75/x
  3. Step 3: Cross multiply
    66,473.88x = 99,710.76 × 19,726.75
  4. Step 4: Simplify right side
    66,473.88x = 1,966,969,234.83
  5. Step 5: Solve for x
    x = 1,966,969,234.83/66,473.88
  6. Step 6: Final answer
    x = 29,590.11

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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.