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Finding the Fourth Proportional to 66,018,860.80, 98,933,812.80 and 48,611,215.60

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Solution

The fourth proportional to 66,018,860.80, 98,933,812.80 and 48,611,215.60 is: 72,847,256.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,018,860.80 : 98,933,812.80 = 48,611,215.60 : x
  2. Step 2: Convert to fraction form
    66,018,860.80/98,933,812.80 = 48,611,215.60/x
  3. Step 3: Cross multiply
    66,018,860.80x = 98,933,812.80 × 48,611,215.60
  4. Step 4: Simplify right side
    66,018,860.80x = 4,809,292,904,150,840
  5. Step 5: Solve for x
    x = 4,809,292,904,150,840/66,018,860.80
  6. Step 6: Final answer
    x = 72,847,256.77

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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.