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Finding the Fourth Proportional to 60,369, 90,558.50 and 18,816

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Solution

The fourth proportional to 60,369, 90,558.50 and 18,816 is: 28,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,369 : 90,558.50 = 18,816 : x
  2. Step 2: Convert to fraction form
    60,369/90,558.50 = 18,816/x
  3. Step 3: Cross multiply
    60,369x = 90,558.50 × 18,816
  4. Step 4: Simplify right side
    60,369x = 1,703,948,641.92
  5. Step 5: Solve for x
    x = 1,703,948,641.92/60,369
  6. Step 6: Final answer
    x = 28,225.56

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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.