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Finding the Fourth Proportional to 89,771.99, 123,885.32 and 49,486.41

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Solution

The fourth proportional to 89,771.99, 123,885.32 and 49,486.41 is: 68,291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,771.99 : 123,885.32 = 49,486.41 : x
  2. Step 2: Convert to fraction form
    89,771.99/123,885.32 = 49,486.41/x
  3. Step 3: Cross multiply
    89,771.99x = 123,885.32 × 49,486.41
  4. Step 4: Simplify right side
    89,771.99x = 6,130,639,491.07
  5. Step 5: Solve for x
    x = 6,130,639,491.07/89,771.99
  6. Step 6: Final answer
    x = 68,291.23

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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.