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Finding the Fourth Proportional to 45,156.84, 67,724.32 and 18,847.32

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Solution

The fourth proportional to 45,156.84, 67,724.32 and 18,847.32 is: 28,266.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,156.84 : 67,724.32 = 18,847.32 : x
  2. Step 2: Convert to fraction form
    45,156.84/67,724.32 = 18,847.32/x
  3. Step 3: Cross multiply
    45,156.84x = 67,724.32 × 18,847.32
  4. Step 4: Simplify right side
    45,156.84x = 1,276,421,930.82
  5. Step 5: Solve for x
    x = 1,276,421,930.82/45,156.84
  6. Step 6: Final answer
    x = 28,266.41

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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.