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Finding the Fourth Proportional to 68,356.48, 102,535.20 and 19,108.48

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Solution

The fourth proportional to 68,356.48, 102,535.20 and 19,108.48 is: 28,662.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,356.48 : 102,535.20 = 19,108.48 : x
  2. Step 2: Convert to fraction form
    68,356.48/102,535.20 = 19,108.48/x
  3. Step 3: Cross multiply
    68,356.48x = 102,535.20 × 19,108.48
  4. Step 4: Simplify right side
    68,356.48x = 1,959,291,818.50
  5. Step 5: Solve for x
    x = 1,959,291,818.50/68,356.48
  6. Step 6: Final answer
    x = 28,662.85

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1.5x scale

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.