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Finding the Fourth Proportional to 45,703.68, 68,545.92 and 12,864

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Solution

The fourth proportional to 45,703.68, 68,545.92 and 12,864 is: 19,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,703.68 : 68,545.92 = 12,864 : x
  2. Step 2: Convert to fraction form
    45,703.68/68,545.92 = 12,864/x
  3. Step 3: Cross multiply
    45,703.68x = 68,545.92 × 12,864
  4. Step 4: Simplify right side
    45,703.68x = 881,774,714.88
  5. Step 5: Solve for x
    x = 881,774,714.88/45,703.68
  6. Step 6: Final answer
    x = 19,293.30

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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.