Home / 81,141,751,726.78-121,731,326,291.01-28,082,785,474.90

Finding the Fourth Proportional to 81,141,751,726.78, 121,731,326,291.01 and 28,082,785,474.90

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Solution

The fourth proportional to 81,141,751,726.78, 121,731,326,291.01 and 28,082,785,474.90 is: 42,130,649,746.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141,751,726.78 : 121,731,326,291.01 = 28,082,785,474.90 : x
  2. Step 2: Convert to fraction form
    81,141,751,726.78/121,731,326,291.01 = 28,082,785,474.90/x
  3. Step 3: Cross multiply
    81,141,751,726.78x = 121,731,326,291.01 × 28,082,785,474.90
  4. Step 4: Simplify right side
    81,141,751,726.78x = 3,418,554,721,805,488,095,232
  5. Step 5: Solve for x
    x = 3,418,554,721,805,488,095,232/81,141,751,726.78
  6. Step 6: Final answer
    x = 42,130,649,746.34

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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.