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Finding the Fourth Proportional to 65,696.30, 90,661.58 and 37,403.81

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Solution

The fourth proportional to 65,696.30, 90,661.58 and 37,403.81 is: 51,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,696.30 : 90,661.58 = 37,403.81 : x
  2. Step 2: Convert to fraction form
    65,696.30/90,661.58 = 37,403.81/x
  3. Step 3: Cross multiply
    65,696.30x = 90,661.58 × 37,403.81
  4. Step 4: Simplify right side
    65,696.30x = 3,391,088,352.54
  5. Step 5: Solve for x
    x = 3,391,088,352.54/65,696.30
  6. Step 6: Final answer
    x = 51,617.65

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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.