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Finding the Third Proportional to 57,400 and 77,528

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Solution

The third proportional to 57,400 and 77,528 is: 104,714.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400 : 77,528 = 77,528 : x
  2. Step 2: Convert to fraction form
    57,400/77,528 = 77,528/x
  3. Step 3: Cross multiply
    57,400x = 77,528 × 77,528
  4. Step 4: Simplify right side
    57,400x = 6,010,590,784
  5. Step 5: Solve for x
    x = 6,010,590,784/57,400
  6. Step 6: Final answer
    x = 104,714.13

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.