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Finding the Fourth Proportional to 45,165.60, 67,755.60 and 18,856.80

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Solution

The fourth proportional to 45,165.60, 67,755.60 and 18,856.80 is: 28,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,165.60 : 67,755.60 = 18,856.80 : x
  2. Step 2: Convert to fraction form
    45,165.60/67,755.60 = 18,856.80/x
  3. Step 3: Cross multiply
    45,165.60x = 67,755.60 × 18,856.80
  4. Step 4: Simplify right side
    45,165.60x = 1,277,653,798.08
  5. Step 5: Solve for x
    x = 1,277,653,798.08/45,165.60
  6. Step 6: Final answer
    x = 28,288.21

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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.