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Finding the Fourth Proportional to 64,653.18, 96,979.77 and 20,283.48

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Solution

The fourth proportional to 64,653.18, 96,979.77 and 20,283.48 is: 30,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.18 : 96,979.77 = 20,283.48 : x
  2. Step 2: Convert to fraction form
    64,653.18/96,979.77 = 20,283.48/x
  3. Step 3: Cross multiply
    64,653.18x = 96,979.77 × 20,283.48
  4. Step 4: Simplify right side
    64,653.18x = 1,967,087,225.20
  5. Step 5: Solve for x
    x = 1,967,087,225.20/64,653.18
  6. Step 6: Final answer
    x = 30,425.22

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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.