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Finding the Third Proportional to 30,638,079 and 66,382,316

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Solution

The third proportional to 30,638,079 and 66,382,316 is: 143,827,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638,079 : 66,382,316 = 66,382,316 : x
  2. Step 2: Convert to fraction form
    30,638,079/66,382,316 = 66,382,316/x
  3. Step 3: Cross multiply
    30,638,079x = 66,382,316 × 66,382,316
  4. Step 4: Simplify right side
    30,638,079x = 4,406,611,877,523,856
  5. Step 5: Solve for x
    x = 4,406,611,877,523,856/30,638,079
  6. Step 6: Final answer
    x = 143,827,942.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.