Home / 78,180,990.36-107,889,724.76-42,899,027.12

Finding the Fourth Proportional to 78,180,990.36, 107,889,724.76 and 42,899,027.12

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Solution

The fourth proportional to 78,180,990.36, 107,889,724.76 and 42,899,027.12 is: 59,200,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,180,990.36 : 107,889,724.76 = 42,899,027.12 : x
  2. Step 2: Convert to fraction form
    78,180,990.36/107,889,724.76 = 42,899,027.12/x
  3. Step 3: Cross multiply
    78,180,990.36x = 107,889,724.76 × 42,899,027.12
  4. Step 4: Simplify right side
    78,180,990.36x = 4,628,364,228,340,739
  5. Step 5: Solve for x
    x = 4,628,364,228,340,739/78,180,990.36
  6. Step 6: Final answer
    x = 59,200,634.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.