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Finding the Fourth Proportional to 45,607.74, 68,411.86 and 20,618.54

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Solution

The fourth proportional to 45,607.74, 68,411.86 and 20,618.54 is: 30,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,607.74 : 68,411.86 = 20,618.54 : x
  2. Step 2: Convert to fraction form
    45,607.74/68,411.86 = 20,618.54/x
  3. Step 3: Cross multiply
    45,607.74x = 68,411.86 × 20,618.54
  4. Step 4: Simplify right side
    45,607.74x = 1,410,552,671.88
  5. Step 5: Solve for x
    x = 1,410,552,671.88/45,607.74
  6. Step 6: Final answer
    x = 30,927.92

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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.