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Finding the Fourth Proportional to 64,636.40, 96,943.64 and 17,878.34

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Solution

The fourth proportional to 64,636.40, 96,943.64 and 17,878.34 is: 26,814.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,636.40 : 96,943.64 = 17,878.34 : x
  2. Step 2: Convert to fraction form
    64,636.40/96,943.64 = 17,878.34/x
  3. Step 3: Cross multiply
    64,636.40x = 96,943.64 × 17,878.34
  4. Step 4: Simplify right side
    64,636.40x = 1,733,190,782.65
  5. Step 5: Solve for x
    x = 1,733,190,782.65/64,636.40
  6. Step 6: Final answer
    x = 26,814.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.