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Finding the Fourth Proportional to 65,510.86, 90,408.19 and 36,839.55

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Solution

The fourth proportional to 65,510.86, 90,408.19 and 36,839.55 is: 50,840.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,510.86 : 90,408.19 = 36,839.55 : x
  2. Step 2: Convert to fraction form
    65,510.86/90,408.19 = 36,839.55/x
  3. Step 3: Cross multiply
    65,510.86x = 90,408.19 × 36,839.55
  4. Step 4: Simplify right side
    65,510.86x = 3,330,596,583.87
  5. Step 5: Solve for x
    x = 3,330,596,583.87/65,510.86
  6. Step 6: Final answer
    x = 50,840.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.