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Finding the Fourth Proportional to 64,687.65, 89,266.63 and 36,006.36

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Solution

The fourth proportional to 64,687.65, 89,266.63 and 36,006.36 is: 49,687.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,687.65 : 89,266.63 = 36,006.36 : x
  2. Step 2: Convert to fraction form
    64,687.65/89,266.63 = 36,006.36/x
  3. Step 3: Cross multiply
    64,687.65x = 89,266.63 × 36,006.36
  4. Step 4: Simplify right side
    64,687.65x = 3,214,166,415.77
  5. Step 5: Solve for x
    x = 3,214,166,415.77/64,687.65
  6. Step 6: Final answer
    x = 49,687.48

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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.