Home / 81,606,977.60-122,410,466.40-21,022,703.60

Finding the Fourth Proportional to 81,606,977.60, 122,410,466.40 and 21,022,703.60

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Solution

The fourth proportional to 81,606,977.60, 122,410,466.40 and 21,022,703.60 is: 31,534,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,606,977.60 : 122,410,466.40 = 21,022,703.60 : x
  2. Step 2: Convert to fraction form
    81,606,977.60/122,410,466.40 = 21,022,703.60/x
  3. Step 3: Cross multiply
    81,606,977.60x = 122,410,466.40 × 21,022,703.60
  4. Step 4: Simplify right side
    81,606,977.60x = 2,573,398,952,664,959.50
  5. Step 5: Solve for x
    x = 2,573,398,952,664,959.50/81,606,977.60
  6. Step 6: Final answer
    x = 31,534,055.40

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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.