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Finding the Third Proportional to 31,135.13 and 64,485.75

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Solution

The third proportional to 31,135.13 and 64,485.75 is: 133,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.13 : 64,485.75 = 64,485.75 : x
  2. Step 2: Convert to fraction form
    31,135.13/64,485.75 = 64,485.75/x
  3. Step 3: Cross multiply
    31,135.13x = 64,485.75 × 64,485.75
  4. Step 4: Simplify right side
    31,135.13x = 4,158,411,953.06
  5. Step 5: Solve for x
    x = 4,158,411,953.06/31,135.13
  6. Step 6: Final answer
    x = 133,560.15

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.