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Finding the Fourth Proportional to 64,649.52, 96,971.46 and 20,275.26

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Solution

The fourth proportional to 64,649.52, 96,971.46 and 20,275.26 is: 30,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,649.52 : 96,971.46 = 20,275.26 : x
  2. Step 2: Convert to fraction form
    64,649.52/96,971.46 = 20,275.26/x
  3. Step 3: Cross multiply
    64,649.52x = 96,971.46 × 20,275.26
  4. Step 4: Simplify right side
    64,649.52x = 1,966,121,564.08
  5. Step 5: Solve for x
    x = 1,966,121,564.08/64,649.52
  6. Step 6: Final answer
    x = 30,412.01

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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.