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Finding the Fourth Proportional to 64,394, 96,590.54 and 20,020.68

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Solution

The fourth proportional to 64,394, 96,590.54 and 20,020.68 is: 30,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,394 : 96,590.54 = 20,020.68 : x
  2. Step 2: Convert to fraction form
    64,394/96,590.54 = 20,020.68/x
  3. Step 3: Cross multiply
    64,394x = 96,590.54 × 20,020.68
  4. Step 4: Simplify right side
    64,394x = 1,933,808,292.37
  5. Step 5: Solve for x
    x = 1,933,808,292.37/64,394
  6. Step 6: Final answer
    x = 30,030.88

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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.