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Finding the Fourth Proportional to 65,818.36, 90,828.96 and 35,603.64

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Solution

The fourth proportional to 65,818.36, 90,828.96 and 35,603.64 is: 49,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,818.36 : 90,828.96 = 35,603.64 : x
  2. Step 2: Convert to fraction form
    65,818.36/90,828.96 = 35,603.64/x
  3. Step 3: Cross multiply
    65,818.36x = 90,828.96 × 35,603.64
  4. Step 4: Simplify right side
    65,818.36x = 3,233,841,593.41
  5. Step 5: Solve for x
    x = 3,233,841,593.41/65,818.36
  6. Step 6: Final answer
    x = 49,132.82

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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.