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Finding the Fourth Proportional to 71,089.70, 98,103.66 and 40,880.85

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Solution

The fourth proportional to 71,089.70, 98,103.66 and 40,880.85 is: 56,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,089.70 : 98,103.66 = 40,880.85 : x
  2. Step 2: Convert to fraction form
    71,089.70/98,103.66 = 40,880.85/x
  3. Step 3: Cross multiply
    71,089.70x = 98,103.66 × 40,880.85
  4. Step 4: Simplify right side
    71,089.70x = 4,010,561,039.55
  5. Step 5: Solve for x
    x = 4,010,561,039.55/71,089.70
  6. Step 6: Final answer
    x = 56,415.50

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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.