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Finding the Fourth Proportional to 65,310.48, 90,128.04 and 35,502.48

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Solution

The fourth proportional to 65,310.48, 90,128.04 and 35,502.48 is: 48,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,310.48 : 90,128.04 = 35,502.48 : x
  2. Step 2: Convert to fraction form
    65,310.48/90,128.04 = 35,502.48/x
  3. Step 3: Cross multiply
    65,310.48x = 90,128.04 × 35,502.48
  4. Step 4: Simplify right side
    65,310.48x = 3,199,768,937.54
  5. Step 5: Solve for x
    x = 3,199,768,937.54/65,310.48
  6. Step 6: Final answer
    x = 48,993.19

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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.