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Finding the Third Proportional to 28,712 and 45,528

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Solution

The third proportional to 28,712 and 45,528 is: 72,192.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712 : 45,528 = 45,528 : x
  2. Step 2: Convert to fraction form
    28,712/45,528 = 45,528/x
  3. Step 3: Cross multiply
    28,712x = 45,528 × 45,528
  4. Step 4: Simplify right side
    28,712x = 2,072,798,784
  5. Step 5: Solve for x
    x = 2,072,798,784/28,712
  6. Step 6: Final answer
    x = 72,192.77

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.