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Finding the Fourth Proportional to 105,790.40, 145,990.74 and 60,469.35

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Solution

The fourth proportional to 105,790.40, 145,990.74 and 60,469.35 is: 83,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,790.40 : 145,990.74 = 60,469.35 : x
  2. Step 2: Convert to fraction form
    105,790.40/145,990.74 = 60,469.35/x
  3. Step 3: Cross multiply
    105,790.40x = 145,990.74 × 60,469.35
  4. Step 4: Simplify right side
    105,790.40x = 8,827,965,153.82
  5. Step 5: Solve for x
    x = 8,827,965,153.82/105,790.40
  6. Step 6: Final answer
    x = 83,447.70

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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.