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Finding the Third Proportional to 61,528 and 129,536

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Solution

The third proportional to 61,528 and 129,536 is: 272,714.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,528 : 129,536 = 129,536 : x
  2. Step 2: Convert to fraction form
    61,528/129,536 = 129,536/x
  3. Step 3: Cross multiply
    61,528x = 129,536 × 129,536
  4. Step 4: Simplify right side
    61,528x = 16,779,575,296
  5. Step 5: Solve for x
    x = 16,779,575,296/61,528
  6. Step 6: Final answer
    x = 272,714.46

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.