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Finding the Fourth Proportional to 64,685.65, 89,263.87 and 36,004.36

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Solution

The fourth proportional to 64,685.65, 89,263.87 and 36,004.36 is: 49,684.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.65 : 89,263.87 = 36,004.36 : x
  2. Step 2: Convert to fraction form
    64,685.65/89,263.87 = 36,004.36/x
  3. Step 3: Cross multiply
    64,685.65x = 89,263.87 × 36,004.36
  4. Step 4: Simplify right side
    64,685.65x = 3,213,888,510.47
  5. Step 5: Solve for x
    x = 3,213,888,510.47/64,685.65
  6. Step 6: Final answer
    x = 49,684.72

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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.