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Finding the Fourth Proportional to 89,951.70, 124,133.49 and 49,665.51

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Solution

The fourth proportional to 89,951.70, 124,133.49 and 49,665.51 is: 68,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,951.70 : 124,133.49 = 49,665.51 : x
  2. Step 2: Convert to fraction form
    89,951.70/124,133.49 = 49,665.51/x
  3. Step 3: Cross multiply
    89,951.70x = 124,133.49 × 49,665.51
  4. Step 4: Simplify right side
    89,951.70x = 6,165,153,088.93
  5. Step 5: Solve for x
    x = 6,165,153,088.93/89,951.70
  6. Step 6: Final answer
    x = 68,538.48

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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.