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Finding the Fourth Proportional to 165,685.61, 248,509.80 and 45,759.61

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Solution

The fourth proportional to 165,685.61, 248,509.80 and 45,759.61 is: 68,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,685.61 : 248,509.80 = 45,759.61 : x
  2. Step 2: Convert to fraction form
    165,685.61/248,509.80 = 45,759.61/x
  3. Step 3: Cross multiply
    165,685.61x = 248,509.80 × 45,759.61
  4. Step 4: Simplify right side
    165,685.61x = 11,371,710,454.27
  5. Step 5: Solve for x
    x = 11,371,710,454.27/165,685.61
  6. Step 6: Final answer
    x = 68,634.27

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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.