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Finding the Fourth Proportional to 68,336.57, 102,509.17 and 28,888.49

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Solution

The fourth proportional to 68,336.57, 102,509.17 and 28,888.49 is: 43,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,336.57 : 102,509.17 = 28,888.49 : x
  2. Step 2: Convert to fraction form
    68,336.57/102,509.17 = 28,888.49/x
  3. Step 3: Cross multiply
    68,336.57x = 102,509.17 × 28,888.49
  4. Step 4: Simplify right side
    68,336.57x = 2,961,334,547.69
  5. Step 5: Solve for x
    x = 2,961,334,547.69/68,336.57
  6. Step 6: Final answer
    x = 43,334.55

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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.