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Finding the Fourth Proportional to 89,651.90, 123,718.62 and 49,364.84

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Solution

The fourth proportional to 89,651.90, 123,718.62 and 49,364.84 is: 68,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,651.90 : 123,718.62 = 49,364.84 : x
  2. Step 2: Convert to fraction form
    89,651.90/123,718.62 = 49,364.84/x
  3. Step 3: Cross multiply
    89,651.90x = 123,718.62 × 49,364.84
  4. Step 4: Simplify right side
    89,651.90x = 6,107,349,881.32
  5. Step 5: Solve for x
    x = 6,107,349,881.32/89,651.90
  6. Step 6: Final answer
    x = 68,122.93

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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.