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Finding the Fourth Proportional to 30,820.03, 42,603.38 and 27,495.79

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Solution

The fourth proportional to 30,820.03, 42,603.38 and 27,495.79 is: 38,008.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,820.03 : 42,603.38 = 27,495.79 : x
  2. Step 2: Convert to fraction form
    30,820.03/42,603.38 = 27,495.79/x
  3. Step 3: Cross multiply
    30,820.03x = 42,603.38 × 27,495.79
  4. Step 4: Simplify right side
    30,820.03x = 1,171,413,589.77
  5. Step 5: Solve for x
    x = 1,171,413,589.77/30,820.03
  6. Step 6: Final answer
    x = 38,008.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.