Home / 70,888,920.40-106,120,804.20-42,120,247.60

Finding the Fourth Proportional to 70,888,920.40, 106,120,804.20 and 42,120,247.60

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Solution

The fourth proportional to 70,888,920.40, 106,120,804.20 and 42,120,247.60 is: 63,054,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888,920.40 : 106,120,804.20 = 42,120,247.60 : x
  2. Step 2: Convert to fraction form
    70,888,920.40/106,120,804.20 = 42,120,247.60/x
  3. Step 3: Cross multiply
    70,888,920.40x = 106,120,804.20 × 42,120,247.60
  4. Step 4: Simplify right side
    70,888,920.40x = 4,469,834,548,415,120
  5. Step 5: Solve for x
    x = 4,469,834,548,415,120/70,888,920.40
  6. Step 6: Final answer
    x = 63,054,064.35

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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.