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Finding the Fourth Proportional to 70,500.30, 105,791.73 and 28,373.82

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Solution

The fourth proportional to 70,500.30, 105,791.73 and 28,373.82 is: 42,577.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.30 : 105,791.73 = 28,373.82 : x
  2. Step 2: Convert to fraction form
    70,500.30/105,791.73 = 28,373.82/x
  3. Step 3: Cross multiply
    70,500.30x = 105,791.73 × 28,373.82
  4. Step 4: Simplify right side
    70,500.30x = 3,001,715,504.51
  5. Step 5: Solve for x
    x = 3,001,715,504.51/70,500.30
  6. Step 6: Final answer
    x = 42,577.34

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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.