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Finding the Fourth Proportional to 30,701.54, 42,365.12 and 17,272.50

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Solution

The fourth proportional to 30,701.54, 42,365.12 and 17,272.50 is: 23,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,701.54 : 42,365.12 = 17,272.50 : x
  2. Step 2: Convert to fraction form
    30,701.54/42,365.12 = 17,272.50/x
  3. Step 3: Cross multiply
    30,701.54x = 42,365.12 × 17,272.50
  4. Step 4: Simplify right side
    30,701.54x = 731,751,535.20
  5. Step 5: Solve for x
    x = 731,751,535.20/30,701.54
  6. Step 6: Final answer
    x = 23,834.36

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