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Finding the Fourth Proportional to 64,968.90, 89,648.01 and 36,287.34

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Solution

The fourth proportional to 64,968.90, 89,648.01 and 36,287.34 is: 50,071.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.90 : 89,648.01 = 36,287.34 : x
  2. Step 2: Convert to fraction form
    64,968.90/89,648.01 = 36,287.34/x
  3. Step 3: Cross multiply
    64,968.90x = 89,648.01 × 36,287.34
  4. Step 4: Simplify right side
    64,968.90x = 3,253,087,819.19
  5. Step 5: Solve for x
    x = 3,253,087,819.19/64,968.90
  6. Step 6: Final answer
    x = 50,071.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.