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Finding the Fourth Proportional to 170,511.78, 255,767.31 and 45,852.90

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Solution

The fourth proportional to 170,511.78, 255,767.31 and 45,852.90 is: 68,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,511.78 : 255,767.31 = 45,852.90 : x
  2. Step 2: Convert to fraction form
    170,511.78/255,767.31 = 45,852.90/x
  3. Step 3: Cross multiply
    170,511.78x = 255,767.31 × 45,852.90
  4. Step 4: Simplify right side
    170,511.78x = 11,727,672,888.70
  5. Step 5: Solve for x
    x = 11,727,672,888.70/170,511.78
  6. Step 6: Final answer
    x = 68,779.25

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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.