Home / 85,705.35-128,479.28-29,532.11

Finding the Fourth Proportional to 85,705.35, 128,479.28 and 29,532.11

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Solution

The fourth proportional to 85,705.35, 128,479.28 and 29,532.11 is: 44,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,705.35 : 128,479.28 = 29,532.11 : x
  2. Step 2: Convert to fraction form
    85,705.35/128,479.28 = 29,532.11/x
  3. Step 3: Cross multiply
    85,705.35x = 128,479.28 × 29,532.11
  4. Step 4: Simplify right side
    85,705.35x = 3,794,263,439.62
  5. Step 5: Solve for x
    x = 3,794,263,439.62/85,705.35
  6. Step 6: Final answer
    x = 44,271.02

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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.