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Finding the Fourth Proportional to 64,498.71, 96,744.63 and 20,120.37

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Solution

The fourth proportional to 64,498.71, 96,744.63 and 20,120.37 is: 30,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,498.71 : 96,744.63 = 20,120.37 : x
  2. Step 2: Convert to fraction form
    64,498.71/96,744.63 = 20,120.37/x
  3. Step 3: Cross multiply
    64,498.71x = 96,744.63 × 20,120.37
  4. Step 4: Simplify right side
    64,498.71x = 1,946,537,751.11
  5. Step 5: Solve for x
    x = 1,946,537,751.11/64,498.71
  6. Step 6: Final answer
    x = 30,179.48

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1.5x scale

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.