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Finding the Fourth Proportional to 68,363.60, 102,545.40 and 57,477.20

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Solution

The fourth proportional to 68,363.60, 102,545.40 and 57,477.20 is: 86,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,363.60 : 102,545.40 = 57,477.20 : x
  2. Step 2: Convert to fraction form
    68,363.60/102,545.40 = 57,477.20/x
  3. Step 3: Cross multiply
    68,363.60x = 102,545.40 × 57,477.20
  4. Step 4: Simplify right side
    68,363.60x = 5,894,022,464.88
  5. Step 5: Solve for x
    x = 5,894,022,464.88/68,363.60
  6. Step 6: Final answer
    x = 86,215.80

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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.