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Finding the Fourth Proportional to 65,900.15, 90,942.26 and 35,685.71

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Solution

The fourth proportional to 65,900.15, 90,942.26 and 35,685.71 is: 49,246.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,900.15 : 90,942.26 = 35,685.71 : x
  2. Step 2: Convert to fraction form
    65,900.15/90,942.26 = 35,685.71/x
  3. Step 3: Cross multiply
    65,900.15x = 90,942.26 × 35,685.71
  4. Step 4: Simplify right side
    65,900.15x = 3,245,339,117.10
  5. Step 5: Solve for x
    x = 3,245,339,117.10/65,900.15
  6. Step 6: Final answer
    x = 49,246.31

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1.5x scale

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.