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Finding the Fourth Proportional to 64,840.36, 89,474.32 and 36,553

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Solution

The fourth proportional to 64,840.36, 89,474.32 and 36,553 is: 50,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.36 : 89,474.32 = 36,553 : x
  2. Step 2: Convert to fraction form
    64,840.36/89,474.32 = 36,553/x
  3. Step 3: Cross multiply
    64,840.36x = 89,474.32 × 36,553
  4. Step 4: Simplify right side
    64,840.36x = 3,270,554,818.96
  5. Step 5: Solve for x
    x = 3,270,554,818.96/64,840.36
  6. Step 6: Final answer
    x = 50,440.11

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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.