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Finding the Third Proportional to 31,002,378 and 66,742,932

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Solution

The third proportional to 31,002,378 and 66,742,932 is: 143,686,364.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,002,378 : 66,742,932 = 66,742,932 : x
  2. Step 2: Convert to fraction form
    31,002,378/66,742,932 = 66,742,932/x
  3. Step 3: Cross multiply
    31,002,378x = 66,742,932 × 66,742,932
  4. Step 4: Simplify right side
    31,002,378x = 4,454,618,971,956,624
  5. Step 5: Solve for x
    x = 4,454,618,971,956,624/31,002,378
  6. Step 6: Final answer
    x = 143,686,364.06

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.