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Finding the Fourth Proportional to 65,670.54, 90,662.67 and 43,379.34

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Solution

The fourth proportional to 65,670.54, 90,662.67 and 43,379.34 is: 59,888.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,670.54 : 90,662.67 = 43,379.34 : x
  2. Step 2: Convert to fraction form
    65,670.54/90,662.67 = 43,379.34/x
  3. Step 3: Cross multiply
    65,670.54x = 90,662.67 × 43,379.34
  4. Step 4: Simplify right side
    65,670.54x = 3,932,886,787.24
  5. Step 5: Solve for x
    x = 3,932,886,787.24/65,670.54
  6. Step 6: Final answer
    x = 59,888.14

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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.