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Finding the Fourth Proportional to 99,795,320.40, 149,692,980.60 and 56,647,851.60

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Solution

The fourth proportional to 99,795,320.40, 149,692,980.60 and 56,647,851.60 is: 84,971,777.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,795,320.40 : 149,692,980.60 = 56,647,851.60 : x
  2. Step 2: Convert to fraction form
    99,795,320.40/149,692,980.60 = 56,647,851.60/x
  3. Step 3: Cross multiply
    99,795,320.40x = 149,692,980.60 × 56,647,851.60
  4. Step 4: Simplify right side
    99,795,320.40x = 8,479,785,750,590,479
  5. Step 5: Solve for x
    x = 8,479,785,750,590,479/99,795,320.40
  6. Step 6: Final answer
    x = 84,971,777.40

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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.