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Finding the Fourth Proportional to 65,886.93, 90,861.69 and 43,245.54

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Solution

The fourth proportional to 65,886.93, 90,861.69 and 43,245.54 is: 59,637.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.93 : 90,861.69 = 43,245.54 : x
  2. Step 2: Convert to fraction form
    65,886.93/90,861.69 = 43,245.54/x
  3. Step 3: Cross multiply
    65,886.93x = 90,861.69 × 43,245.54
  4. Step 4: Simplify right side
    65,886.93x = 3,929,362,849.36
  5. Step 5: Solve for x
    x = 3,929,362,849.36/65,886.93
  6. Step 6: Final answer
    x = 59,637.97

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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.