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Finding the Fourth Proportional to 60,489.35, 90,728.16 and 18,369.80

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Solution

The fourth proportional to 60,489.35, 90,728.16 and 18,369.80 is: 27,552.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,489.35 : 90,728.16 = 18,369.80 : x
  2. Step 2: Convert to fraction form
    60,489.35/90,728.16 = 18,369.80/x
  3. Step 3: Cross multiply
    60,489.35x = 90,728.16 × 18,369.80
  4. Step 4: Simplify right side
    60,489.35x = 1,666,658,153.57
  5. Step 5: Solve for x
    x = 1,666,658,153.57/60,489.35
  6. Step 6: Final answer
    x = 27,552.92

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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.