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Finding the Fourth Proportional to 65,379.64, 98,068.92 and 18,632.64

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Solution

The fourth proportional to 65,379.64, 98,068.92 and 18,632.64 is: 27,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,379.64 : 98,068.92 = 18,632.64 : x
  2. Step 2: Convert to fraction form
    65,379.64/98,068.92 = 18,632.64/x
  3. Step 3: Cross multiply
    65,379.64x = 98,068.92 × 18,632.64
  4. Step 4: Simplify right side
    65,379.64x = 1,827,282,881.55
  5. Step 5: Solve for x
    x = 1,827,282,881.55/65,379.64
  6. Step 6: Final answer
    x = 27,948.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.