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Finding the Fourth Proportional to 60,385.80, 90,578.67 and 18,832.80

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Solution

The fourth proportional to 60,385.80, 90,578.67 and 18,832.80 is: 28,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,385.80 : 90,578.67 = 18,832.80 : x
  2. Step 2: Convert to fraction form
    60,385.80/90,578.67 = 18,832.80/x
  3. Step 3: Cross multiply
    60,385.80x = 90,578.67 × 18,832.80
  4. Step 4: Simplify right side
    60,385.80x = 1,705,849,976.38
  5. Step 5: Solve for x
    x = 1,705,849,976.38/60,385.80
  6. Step 6: Final answer
    x = 28,249.19

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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.