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Finding the Fourth Proportional to 65,790.28, 90,790.53 and 35,575.54

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Solution

The fourth proportional to 65,790.28, 90,790.53 and 35,575.54 is: 49,094.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.28 : 90,790.53 = 35,575.54 : x
  2. Step 2: Convert to fraction form
    65,790.28/90,790.53 = 35,575.54/x
  3. Step 3: Cross multiply
    65,790.28x = 90,790.53 × 35,575.54
  4. Step 4: Simplify right side
    65,790.28x = 3,229,922,131.64
  5. Step 5: Solve for x
    x = 3,229,922,131.64/65,790.28
  6. Step 6: Final answer
    x = 49,094.21

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Why These Related Problems?

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