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Finding the Fourth Proportional to 29,139.60, 40,211.49 and 17,206.77

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Solution

The fourth proportional to 29,139.60, 40,211.49 and 17,206.77 is: 23,744.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.60 : 40,211.49 = 17,206.77 : x
  2. Step 2: Convert to fraction form
    29,139.60/40,211.49 = 17,206.77/x
  3. Step 3: Cross multiply
    29,139.60x = 40,211.49 × 17,206.77
  4. Step 4: Simplify right side
    29,139.60x = 691,909,859.79
  5. Step 5: Solve for x
    x = 691,909,859.79/29,139.60
  6. Step 6: Final answer
    x = 23,744.66

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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.