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Finding the Fourth Proportional to 65,640.51, 90,583.11 and 37,346.13

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Solution

The fourth proportional to 65,640.51, 90,583.11 and 37,346.13 is: 51,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,640.51 : 90,583.11 = 37,346.13 : x
  2. Step 2: Convert to fraction form
    65,640.51/90,583.11 = 37,346.13/x
  3. Step 3: Cross multiply
    65,640.51x = 90,583.11 × 37,346.13
  4. Step 4: Simplify right side
    65,640.51x = 3,382,928,601.86
  5. Step 5: Solve for x
    x = 3,382,928,601.86/65,640.51
  6. Step 6: Final answer
    x = 51,537.21

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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.