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Finding the Fourth Proportional to 71,359.80, 107,039.70 and 41,762.40

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Solution

The fourth proportional to 71,359.80, 107,039.70 and 41,762.40 is: 62,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.80 : 107,039.70 = 41,762.40 : x
  2. Step 2: Convert to fraction form
    71,359.80/107,039.70 = 41,762.40/x
  3. Step 3: Cross multiply
    71,359.80x = 107,039.70 × 41,762.40
  4. Step 4: Simplify right side
    71,359.80x = 4,470,234,767.28
  5. Step 5: Solve for x
    x = 4,470,234,767.28/71,359.80
  6. Step 6: Final answer
    x = 62,643.60

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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.