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Finding the Third Proportional to 53,490 and 84,771

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Solution

The third proportional to 53,490 and 84,771 is: 134,345.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,490 : 84,771 = 84,771 : x
  2. Step 2: Convert to fraction form
    53,490/84,771 = 84,771/x
  3. Step 3: Cross multiply
    53,490x = 84,771 × 84,771
  4. Step 4: Simplify right side
    53,490x = 7,186,122,441
  5. Step 5: Solve for x
    x = 7,186,122,441/53,490
  6. Step 6: Final answer
    x = 134,345.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.