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Finding the Fourth Proportional to 65,848.61, 98,776.09 and 21,475.28

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Solution

The fourth proportional to 65,848.61, 98,776.09 and 21,475.28 is: 32,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,848.61 : 98,776.09 = 21,475.28 : x
  2. Step 2: Convert to fraction form
    65,848.61/98,776.09 = 21,475.28/x
  3. Step 3: Cross multiply
    65,848.61x = 98,776.09 × 21,475.28
  4. Step 4: Simplify right side
    65,848.61x = 2,121,244,190.06
  5. Step 5: Solve for x
    x = 2,121,244,190.06/65,848.61
  6. Step 6: Final answer
    x = 32,213.96

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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.