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Finding the Fourth Proportional to 91,880.60, 137,859.30 and 29,570.20

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Solution

The fourth proportional to 91,880.60, 137,859.30 and 29,570.20 is: 44,367.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,880.60 : 137,859.30 = 29,570.20 : x
  2. Step 2: Convert to fraction form
    91,880.60/137,859.30 = 29,570.20/x
  3. Step 3: Cross multiply
    91,880.60x = 137,859.30 × 29,570.20
  4. Step 4: Simplify right side
    91,880.60x = 4,076,527,072.86
  5. Step 5: Solve for x
    x = 4,076,527,072.86/91,880.60
  6. Step 6: Final answer
    x = 44,367.66

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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.