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Finding the Fourth Proportional to 66,726.90, 100,089.95 and 26,763.93

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Solution

The fourth proportional to 66,726.90, 100,089.95 and 26,763.93 is: 40,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,726.90 : 100,089.95 = 26,763.93 : x
  2. Step 2: Convert to fraction form
    66,726.90/100,089.95 = 26,763.93/x
  3. Step 3: Cross multiply
    66,726.90x = 100,089.95 × 26,763.93
  4. Step 4: Simplify right side
    66,726.90x = 2,678,800,281.68
  5. Step 5: Solve for x
    x = 2,678,800,281.68/66,726.90
  6. Step 6: Final answer
    x = 40,145.73

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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.