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Finding the Fourth Proportional to 89,390.79, 123,359.99 and 49,104.99

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Solution

The fourth proportional to 89,390.79, 123,359.99 and 49,104.99 is: 67,765.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,390.79 : 123,359.99 = 49,104.99 : x
  2. Step 2: Convert to fraction form
    89,390.79/123,359.99 = 49,104.99/x
  3. Step 3: Cross multiply
    89,390.79x = 123,359.99 × 49,104.99
  4. Step 4: Simplify right side
    89,390.79x = 6,057,590,829.83
  5. Step 5: Solve for x
    x = 6,057,590,829.83/89,390.79
  6. Step 6: Final answer
    x = 67,765.27

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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.