Home / 84,168,893.70-126,289,712.16-45,261,870.84

Finding the Fourth Proportional to 84,168,893.70, 126,289,712.16 and 45,261,870.84

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Solution

The fourth proportional to 84,168,893.70, 126,289,712.16 and 45,261,870.84 is: 67,912,365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,168,893.70 : 126,289,712.16 = 45,261,870.84 : x
  2. Step 2: Convert to fraction form
    84,168,893.70/126,289,712.16 = 45,261,870.84/x
  3. Step 3: Cross multiply
    84,168,893.70x = 126,289,712.16 × 45,261,870.84
  4. Step 4: Simplify right side
    84,168,893.70x = 5,716,108,640,206,698
  5. Step 5: Solve for x
    x = 5,716,108,640,206,698/84,168,893.70
  6. Step 6: Final answer
    x = 67,912,365.11

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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.