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Finding the Fourth Proportional to 40,465.54, 60,705.48 and 12,384.97

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Solution

The fourth proportional to 40,465.54, 60,705.48 and 12,384.97 is: 18,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,465.54 : 60,705.48 = 12,384.97 : x
  2. Step 2: Convert to fraction form
    40,465.54/60,705.48 = 12,384.97/x
  3. Step 3: Cross multiply
    40,465.54x = 60,705.48 × 12,384.97
  4. Step 4: Simplify right side
    40,465.54x = 751,835,545.24
  5. Step 5: Solve for x
    x = 751,835,545.24/40,465.54
  6. Step 6: Final answer
    x = 18,579.65

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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.