Home / 80,217,386.40-120,370,787.52-43,328,531.52

Finding the Fourth Proportional to 80,217,386.40, 120,370,787.52 and 43,328,531.52

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Solution

The fourth proportional to 80,217,386.40, 120,370,787.52 and 43,328,531.52 is: 65,016,945.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,217,386.40 : 120,370,787.52 = 43,328,531.52 : x
  2. Step 2: Convert to fraction form
    80,217,386.40/120,370,787.52 = 43,328,531.52/x
  3. Step 3: Cross multiply
    80,217,386.40x = 120,370,787.52 × 43,328,531.52
  4. Step 4: Simplify right side
    80,217,386.40x = 5,215,489,461,147,543
  5. Step 5: Solve for x
    x = 5,215,489,461,147,543/80,217,386.40
  6. Step 6: Final answer
    x = 65,016,945.77

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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.