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Finding the Fourth Proportional to 66,580,070, 99,870,105 and 18,711,014

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Solution

The fourth proportional to 66,580,070, 99,870,105 and 18,711,014 is: 28,066,521

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580,070 : 99,870,105 = 18,711,014 : x
  2. Step 2: Convert to fraction form
    66,580,070/99,870,105 = 18,711,014/x
  3. Step 3: Cross multiply
    66,580,070x = 99,870,105 × 18,711,014
  4. Step 4: Simplify right side
    66,580,070x = 1,868,670,932,836,470
  5. Step 5: Solve for x
    x = 1,868,670,932,836,470/66,580,070
  6. Step 6: Final answer
    x = 28,066,521

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.