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Finding the Third Proportional to 58,240 and 90,206

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Solution

The third proportional to 58,240 and 90,206 is: 139,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,240 : 90,206 = 90,206 : x
  2. Step 2: Convert to fraction form
    58,240/90,206 = 90,206/x
  3. Step 3: Cross multiply
    58,240x = 90,206 × 90,206
  4. Step 4: Simplify right side
    58,240x = 8,137,122,436
  5. Step 5: Solve for x
    x = 8,137,122,436/58,240
  6. Step 6: Final answer
    x = 139,717.07

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.