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Finding the Third Proportional to 42,708,480 and 66,185,880

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Solution

The third proportional to 42,708,480 and 66,185,880 is: 102,569,108.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,708,480 : 66,185,880 = 66,185,880 : x
  2. Step 2: Convert to fraction form
    42,708,480/66,185,880 = 66,185,880/x
  3. Step 3: Cross multiply
    42,708,480x = 66,185,880 × 66,185,880
  4. Step 4: Simplify right side
    42,708,480x = 4,380,570,711,374,400
  5. Step 5: Solve for x
    x = 4,380,570,711,374,400/42,708,480
  6. Step 6: Final answer
    x = 102,569,108.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.