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Finding the Fourth Proportional to 64,662.79, 89,246.93 and 40,474.98

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Solution

The fourth proportional to 64,662.79, 89,246.93 and 40,474.98 is: 55,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,662.79 : 89,246.93 = 40,474.98 : x
  2. Step 2: Convert to fraction form
    64,662.79/89,246.93 = 40,474.98/x
  3. Step 3: Cross multiply
    64,662.79x = 89,246.93 × 40,474.98
  4. Step 4: Simplify right side
    64,662.79x = 3,612,267,706.81
  5. Step 5: Solve for x
    x = 3,612,267,706.81/64,662.79
  6. Step 6: Final answer
    x = 55,863.16

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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.