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Finding the Third Proportional to 61,709,078 and 128,525,778

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Solution

The third proportional to 61,709,078 and 128,525,778 is: 267,689,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,709,078 : 128,525,778 = 128,525,778 : x
  2. Step 2: Convert to fraction form
    61,709,078/128,525,778 = 128,525,778/x
  3. Step 3: Cross multiply
    61,709,078x = 128,525,778 × 128,525,778
  4. Step 4: Simplify right side
    61,709,078x = 16,518,875,610,505,284
  5. Step 5: Solve for x
    x = 16,518,875,610,505,284/61,709,078
  6. Step 6: Final answer
    x = 267,689,554.70

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.