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Finding the Fourth Proportional to 66,028,878.40, 99,117,967.20 and 50,949,659.20

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Solution

The fourth proportional to 66,028,878.40, 99,117,967.20 and 50,949,659.20 is: 76,482,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028,878.40 : 99,117,967.20 = 50,949,659.20 : x
  2. Step 2: Convert to fraction form
    66,028,878.40/99,117,967.20 = 50,949,659.20/x
  3. Step 3: Cross multiply
    66,028,878.40x = 99,117,967.20 × 50,949,659.20
  4. Step 4: Simplify right side
    66,028,878.40x = 5,050,026,649,436,779
  5. Step 5: Solve for x
    x = 5,050,026,649,436,779/66,028,878.40
  6. Step 6: Final answer
    x = 76,482,090.44

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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.