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Finding the Third Proportional to 30,216,438 and 64,740,438

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Solution

The third proportional to 30,216,438 and 64,740,438 is: 138,710,072.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,216,438 : 64,740,438 = 64,740,438 : x
  2. Step 2: Convert to fraction form
    30,216,438/64,740,438 = 64,740,438/x
  3. Step 3: Cross multiply
    30,216,438x = 64,740,438 × 64,740,438
  4. Step 4: Simplify right side
    30,216,438x = 4,191,324,312,431,844
  5. Step 5: Solve for x
    x = 4,191,324,312,431,844/30,216,438
  6. Step 6: Final answer
    x = 138,710,072.72

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.