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Finding the Third Proportional to 42,802.50 and 66,535

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Solution

The third proportional to 42,802.50 and 66,535 is: 103,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,802.50 : 66,535 = 66,535 : x
  2. Step 2: Convert to fraction form
    42,802.50/66,535 = 66,535/x
  3. Step 3: Cross multiply
    42,802.50x = 66,535 × 66,535
  4. Step 4: Simplify right side
    42,802.50x = 4,426,906,225
  5. Step 5: Solve for x
    x = 4,426,906,225/42,802.50
  6. Step 6: Final answer
    x = 103,426.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.