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Finding the Fourth Proportional to 66,580,066, 99,870,099 and 18,711,010

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Solution

The fourth proportional to 66,580,066, 99,870,099 and 18,711,010 is: 28,066,515

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580,066 : 99,870,099 = 18,711,010 : x
  2. Step 2: Convert to fraction form
    66,580,066/99,870,099 = 18,711,010/x
  3. Step 3: Cross multiply
    66,580,066x = 99,870,099 × 18,711,010
  4. Step 4: Simplify right side
    66,580,066x = 1,868,670,421,089,990
  5. Step 5: Solve for x
    x = 1,868,670,421,089,990/66,580,066
  6. Step 6: Final answer
    x = 28,066,515

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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.