Home / 81,141,751,731.89-121,731,326,298.83-28,082,785,480.01

Finding the Fourth Proportional to 81,141,751,731.89, 121,731,326,298.83 and 28,082,785,480.01

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Solution

The fourth proportional to 81,141,751,731.89, 121,731,326,298.83 and 28,082,785,480.01 is: 42,130,649,754.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141,751,731.89 : 121,731,326,298.83 = 28,082,785,480.01 : x
  2. Step 2: Convert to fraction form
    81,141,751,731.89/121,731,326,298.83 = 28,082,785,480.01/x
  3. Step 3: Cross multiply
    81,141,751,731.89x = 121,731,326,298.83 × 28,082,785,480.01
  4. Step 4: Simplify right side
    81,141,751,731.89x = 3,418,554,722,647,020,666,880
  5. Step 5: Solve for x
    x = 3,418,554,722,647,020,666,880/81,141,751,731.89
  6. Step 6: Final answer
    x = 42,130,649,754.06

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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.