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Finding the Fourth Proportional to 65,700.42, 98,534.22 and 21,339.87

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Solution

The fourth proportional to 65,700.42, 98,534.22 and 21,339.87 is: 32,004.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,700.42 : 98,534.22 = 21,339.87 : x
  2. Step 2: Convert to fraction form
    65,700.42/98,534.22 = 21,339.87/x
  3. Step 3: Cross multiply
    65,700.42x = 98,534.22 × 21,339.87
  4. Step 4: Simplify right side
    65,700.42x = 2,102,707,445.35
  5. Step 5: Solve for x
    x = 2,102,707,445.35/65,700.42
  6. Step 6: Final answer
    x = 32,004.47

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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.