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Finding the Fourth Proportional to 99,737.70, 149,606.55 and 40,615.80

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Solution

The fourth proportional to 99,737.70, 149,606.55 and 40,615.80 is: 60,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.70 : 149,606.55 = 40,615.80 : x
  2. Step 2: Convert to fraction form
    99,737.70/149,606.55 = 40,615.80/x
  3. Step 3: Cross multiply
    99,737.70x = 149,606.55 × 40,615.80
  4. Step 4: Simplify right side
    99,737.70x = 6,076,389,713.49
  5. Step 5: Solve for x
    x = 6,076,389,713.49/99,737.70
  6. Step 6: Final answer
    x = 60,923.70

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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.