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Finding the Fourth Proportional to 65,900.21, 98,656.52 and 40,859.87

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Solution

The fourth proportional to 65,900.21, 98,656.52 and 40,859.87 is: 61,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,900.21 : 98,656.52 = 40,859.87 : x
  2. Step 2: Convert to fraction form
    65,900.21/98,656.52 = 40,859.87/x
  3. Step 3: Cross multiply
    65,900.21x = 98,656.52 × 40,859.87
  4. Step 4: Simplify right side
    65,900.21x = 4,031,091,884.27
  5. Step 5: Solve for x
    x = 4,031,091,884.27/65,900.21
  6. Step 6: Final answer
    x = 61,169.64

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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.