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Finding the Fourth Proportional to 68,368.76, 102,540.15 and 28,953.54

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Solution

The fourth proportional to 68,368.76, 102,540.15 and 28,953.54 is: 43,424.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,368.76 : 102,540.15 = 28,953.54 : x
  2. Step 2: Convert to fraction form
    68,368.76/102,540.15 = 28,953.54/x
  3. Step 3: Cross multiply
    68,368.76x = 102,540.15 × 28,953.54
  4. Step 4: Simplify right side
    68,368.76x = 2,968,900,334.63
  5. Step 5: Solve for x
    x = 2,968,900,334.63/68,368.76
  6. Step 6: Final answer
    x = 43,424.81

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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.