Home / 81,828,414,961.34-112,103,052,574.35-78,769,073,557.58

Finding the Fourth Proportional to 81,828,414,961.34, 112,103,052,574.35 and 78,769,073,557.58

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Solution

The fourth proportional to 81,828,414,961.34, 112,103,052,574.35 and 78,769,073,557.58 is: 107,911,824,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,828,414,961.34 : 112,103,052,574.35 = 78,769,073,557.58 : x
  2. Step 2: Convert to fraction form
    81,828,414,961.34/112,103,052,574.35 = 78,769,073,557.58/x
  3. Step 3: Cross multiply
    81,828,414,961.34x = 112,103,052,574.35 × 78,769,073,557.58
  4. Step 4: Simplify right side
    81,828,414,961.34x = 8,830,253,594,257,672,634,368
  5. Step 5: Solve for x
    x = 8,830,253,594,257,672,634,368/81,828,414,961.34
  6. Step 6: Final answer
    x = 107,911,824,986.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.