Home / 80,217,290.34-120,370,643.37-43,328,435.58

Finding the Fourth Proportional to 80,217,290.34, 120,370,643.37 and 43,328,435.58

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Solution

The fourth proportional to 80,217,290.34, 120,370,643.37 and 43,328,435.58 is: 65,016,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,217,290.34 : 120,370,643.37 = 43,328,435.58 : x
  2. Step 2: Convert to fraction form
    80,217,290.34/120,370,643.37 = 43,328,435.58/x
  3. Step 3: Cross multiply
    80,217,290.34x = 120,370,643.37 × 43,328,435.58
  4. Step 4: Simplify right side
    80,217,290.34x = 5,215,471,666,980,199
  5. Step 5: Solve for x
    x = 5,215,471,666,980,199/80,217,290.34
  6. Step 6: Final answer
    x = 65,016,801.80

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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.