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Finding the Fourth Proportional to 91,095.04, 136,649.04 and 28,765

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Solution

The fourth proportional to 91,095.04, 136,649.04 and 28,765 is: 43,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,095.04 : 136,649.04 = 28,765 : x
  2. Step 2: Convert to fraction form
    91,095.04/136,649.04 = 28,765/x
  3. Step 3: Cross multiply
    91,095.04x = 136,649.04 × 28,765
  4. Step 4: Simplify right side
    91,095.04x = 3,930,709,635.60
  5. Step 5: Solve for x
    x = 3,930,709,635.60/91,095.04
  6. Step 6: Final answer
    x = 43,149.55

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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.