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Finding the Third Proportional to 72,070,518 and 155,478,420

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Solution

The third proportional to 72,070,518 and 155,478,420 is: 335,415,087.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,070,518 : 155,478,420 = 155,478,420 : x
  2. Step 2: Convert to fraction form
    72,070,518/155,478,420 = 155,478,420/x
  3. Step 3: Cross multiply
    72,070,518x = 155,478,420 × 155,478,420
  4. Step 4: Simplify right side
    72,070,518x = 24,173,539,085,696,400
  5. Step 5: Solve for x
    x = 24,173,539,085,696,400/72,070,518
  6. Step 6: Final answer
    x = 335,415,087.29

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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.