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Finding the Fourth Proportional to 68,090.48, 102,113.04 and 28,640.24

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Solution

The fourth proportional to 68,090.48, 102,113.04 and 28,640.24 is: 42,950.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,090.48 : 102,113.04 = 28,640.24 : x
  2. Step 2: Convert to fraction form
    68,090.48/102,113.04 = 28,640.24/x
  3. Step 3: Cross multiply
    68,090.48x = 102,113.04 × 28,640.24
  4. Step 4: Simplify right side
    68,090.48x = 2,924,541,972.73
  5. Step 5: Solve for x
    x = 2,924,541,972.73/68,090.48
  6. Step 6: Final answer
    x = 42,950.82

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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.