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Finding the Third Proportional to 30,663,928.69 and 67,549,872.38

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Solution

The third proportional to 30,663,928.69 and 67,549,872.38 is: 148,806,283.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663,928.69 : 67,549,872.38 = 67,549,872.38 : x
  2. Step 2: Convert to fraction form
    30,663,928.69/67,549,872.38 = 67,549,872.38/x
  3. Step 3: Cross multiply
    30,663,928.69x = 67,549,872.38 × 67,549,872.38
  4. Step 4: Simplify right side
    30,663,928.69x = 4,562,985,257,878,788
  5. Step 5: Solve for x
    x = 4,562,985,257,878,788/30,663,928.69
  6. Step 6: Final answer
    x = 148,806,283.25

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.