Home / 80,511.40-120,690.30-62,732.20

Finding the Fourth Proportional to 80,511.40, 120,690.30 and 62,732.20

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Solution

The fourth proportional to 80,511.40, 120,690.30 and 62,732.20 is: 94,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.40 : 120,690.30 = 62,732.20 : x
  2. Step 2: Convert to fraction form
    80,511.40/120,690.30 = 62,732.20/x
  3. Step 3: Cross multiply
    80,511.40x = 120,690.30 × 62,732.20
  4. Step 4: Simplify right side
    80,511.40x = 7,571,168,037.66
  5. Step 5: Solve for x
    x = 7,571,168,037.66/80,511.40
  6. Step 6: Final answer
    x = 94,038.46

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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.