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Finding the Fourth Proportional to 64,656.52, 96,995.94 and 20,274.76

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Solution

The fourth proportional to 64,656.52, 96,995.94 and 20,274.76 is: 30,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,656.52 : 96,995.94 = 20,274.76 : x
  2. Step 2: Convert to fraction form
    64,656.52/96,995.94 = 20,274.76/x
  3. Step 3: Cross multiply
    64,656.52x = 96,995.94 × 20,274.76
  4. Step 4: Simplify right side
    64,656.52x = 1,966,569,404.47
  5. Step 5: Solve for x
    x = 1,966,569,404.47/64,656.52
  6. Step 6: Final answer
    x = 30,415.64

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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.