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Finding the Fourth Proportional to 28,167.01, 42,247.77 and 7,390.51

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Solution

The fourth proportional to 28,167.01, 42,247.77 and 7,390.51 is: 11,085.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.01 : 42,247.77 = 7,390.51 : x
  2. Step 2: Convert to fraction form
    28,167.01/42,247.77 = 7,390.51/x
  3. Step 3: Cross multiply
    28,167.01x = 42,247.77 × 7,390.51
  4. Step 4: Simplify right side
    28,167.01x = 312,232,433.33
  5. Step 5: Solve for x
    x = 312,232,433.33/28,167.01
  6. Step 6: Final answer
    x = 11,085.04

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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.