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Finding the Fourth Proportional to 71,635.52, 98,855.07 and 39,803.60

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Solution

The fourth proportional to 71,635.52, 98,855.07 and 39,803.60 is: 54,927.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,635.52 : 98,855.07 = 39,803.60 : x
  2. Step 2: Convert to fraction form
    71,635.52/98,855.07 = 39,803.60/x
  3. Step 3: Cross multiply
    71,635.52x = 98,855.07 × 39,803.60
  4. Step 4: Simplify right side
    71,635.52x = 3,934,787,762.13
  5. Step 5: Solve for x
    x = 3,934,787,762.13/71,635.52
  6. Step 6: Final answer
    x = 54,927.89

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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.