Home / 78,377,890.80-108,164,264.67-43,098,380.94

Finding the Fourth Proportional to 78,377,890.80, 108,164,264.67 and 43,098,380.94

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Solution

The fourth proportional to 78,377,890.80, 108,164,264.67 and 43,098,380.94 is: 59,477,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,377,890.80 : 108,164,264.67 = 43,098,380.94 : x
  2. Step 2: Convert to fraction form
    78,377,890.80/108,164,264.67 = 43,098,380.94/x
  3. Step 3: Cross multiply
    78,377,890.80x = 108,164,264.67 × 43,098,380.94
  4. Step 4: Simplify right side
    78,377,890.80x = 4,661,704,682,842,643
  5. Step 5: Solve for x
    x = 4,661,704,682,842,643/78,377,890.80
  6. Step 6: Final answer
    x = 59,477,291.81

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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.