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Finding the Fourth Proportional to 94,220.70, 141,331.05 and 31,891.20

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Solution

The fourth proportional to 94,220.70, 141,331.05 and 31,891.20 is: 47,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,220.70 : 141,331.05 = 31,891.20 : x
  2. Step 2: Convert to fraction form
    94,220.70/141,331.05 = 31,891.20/x
  3. Step 3: Cross multiply
    94,220.70x = 141,331.05 × 31,891.20
  4. Step 4: Simplify right side
    94,220.70x = 4,507,216,781.76
  5. Step 5: Solve for x
    x = 4,507,216,781.76/94,220.70
  6. Step 6: Final answer
    x = 47,836.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.