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Finding the Third Proportional to 30,135.80 and 66,012.47

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Solution

The third proportional to 30,135.80 and 66,012.47 is: 144,600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.80 : 66,012.47 = 66,012.47 : x
  2. Step 2: Convert to fraction form
    30,135.80/66,012.47 = 66,012.47/x
  3. Step 3: Cross multiply
    30,135.80x = 66,012.47 × 66,012.47
  4. Step 4: Simplify right side
    30,135.80x = 4,357,646,030.47
  5. Step 5: Solve for x
    x = 4,357,646,030.47/30,135.80
  6. Step 6: Final answer
    x = 144,600.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.