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Finding the Third Proportional to 71,748 and 98,490

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Solution

The third proportional to 71,748 and 98,490 is: 135,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748 : 98,490 = 98,490 : x
  2. Step 2: Convert to fraction form
    71,748/98,490 = 98,490/x
  3. Step 3: Cross multiply
    71,748x = 98,490 × 98,490
  4. Step 4: Simplify right side
    71,748x = 9,700,280,100
  5. Step 5: Solve for x
    x = 9,700,280,100/71,748
  6. Step 6: Final answer
    x = 135,199.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.