Home / 85,994.22-128,981.60-29,823.96

Finding the Fourth Proportional to 85,994.22, 128,981.60 and 29,823.96

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Solution

The fourth proportional to 85,994.22, 128,981.60 and 29,823.96 is: 44,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,994.22 : 128,981.60 = 29,823.96 : x
  2. Step 2: Convert to fraction form
    85,994.22/128,981.60 = 29,823.96/x
  3. Step 3: Cross multiply
    85,994.22x = 128,981.60 × 29,823.96
  4. Step 4: Simplify right side
    85,994.22x = 3,846,742,079.14
  5. Step 5: Solve for x
    x = 3,846,742,079.14/85,994.22
  6. Step 6: Final answer
    x = 44,732.57

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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.