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Finding the Third Proportional to 30,638,142 and 66,118,045.50

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Solution

The third proportional to 30,638,142 and 66,118,045.50 is: 142,684,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638,142 : 66,118,045.50 = 66,118,045.50 : x
  2. Step 2: Convert to fraction form
    30,638,142/66,118,045.50 = 66,118,045.50/x
  3. Step 3: Cross multiply
    30,638,142x = 66,118,045.50 × 66,118,045.50
  4. Step 4: Simplify right side
    30,638,142x = 4,371,595,940,740,070
  5. Step 5: Solve for x
    x = 4,371,595,940,740,070/30,638,142
  6. Step 6: Final answer
    x = 142,684,760.09

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.