Home / 81,808.17-122,731.99-28,492.35

Finding the Fourth Proportional to 81,808.17, 122,731.99 and 28,492.35

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Solution

The fourth proportional to 81,808.17, 122,731.99 and 28,492.35 is: 42,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,808.17 : 122,731.99 = 28,492.35 : x
  2. Step 2: Convert to fraction form
    81,808.17/122,731.99 = 28,492.35/x
  3. Step 3: Cross multiply
    81,808.17x = 122,731.99 × 28,492.35
  4. Step 4: Simplify right side
    81,808.17x = 3,496,922,815.28
  5. Step 5: Solve for x
    x = 3,496,922,815.28/81,808.17
  6. Step 6: Final answer
    x = 42,745.40

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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.