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Finding the Fourth Proportional to 64,848.36, 89,485.38 and 36,561

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Solution

The fourth proportional to 64,848.36, 89,485.38 and 36,561 is: 50,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,848.36 : 89,485.38 = 36,561 : x
  2. Step 2: Convert to fraction form
    64,848.36/89,485.38 = 36,561/x
  3. Step 3: Cross multiply
    64,848.36x = 89,485.38 × 36,561
  4. Step 4: Simplify right side
    64,848.36x = 3,271,674,978.18
  5. Step 5: Solve for x
    x = 3,271,674,978.18/64,848.36
  6. Step 6: Final answer
    x = 50,451.16

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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.