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Finding the Fourth Proportional to 65,953.74, 98,893.71 and 28,490.43

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Solution

The fourth proportional to 65,953.74, 98,893.71 and 28,490.43 is: 42,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,953.74 : 98,893.71 = 28,490.43 : x
  2. Step 2: Convert to fraction form
    65,953.74/98,893.71 = 28,490.43/x
  3. Step 3: Cross multiply
    65,953.74x = 98,893.71 × 28,490.43
  4. Step 4: Simplify right side
    65,953.74x = 2,817,524,322.20
  5. Step 5: Solve for x
    x = 2,817,524,322.20/65,953.74
  6. Step 6: Final answer
    x = 42,719.71

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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.