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Finding the Fourth Proportional to 45,798.78, 68,724.15 and 19,500.78

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Solution

The fourth proportional to 45,798.78, 68,724.15 and 19,500.78 is: 29,262.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,798.78 : 68,724.15 = 19,500.78 : x
  2. Step 2: Convert to fraction form
    45,798.78/68,724.15 = 19,500.78/x
  3. Step 3: Cross multiply
    45,798.78x = 68,724.15 × 19,500.78
  4. Step 4: Simplify right side
    45,798.78x = 1,340,174,529.84
  5. Step 5: Solve for x
    x = 1,340,174,529.84/45,798.78
  6. Step 6: Final answer
    x = 29,262.23

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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.