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Finding the Fourth Proportional to 64,838.40, 89,474.40 and 36,549.96

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Solution

The fourth proportional to 64,838.40, 89,474.40 and 36,549.96 is: 50,437.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,838.40 : 89,474.40 = 36,549.96 : x
  2. Step 2: Convert to fraction form
    64,838.40/89,474.40 = 36,549.96/x
  3. Step 3: Cross multiply
    64,838.40x = 89,474.40 × 36,549.96
  4. Step 4: Simplify right side
    64,838.40x = 3,270,285,741.02
  5. Step 5: Solve for x
    x = 3,270,285,741.02/64,838.40
  6. Step 6: Final answer
    x = 50,437.48

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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.