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Finding the Fourth Proportional to 85,924.60, 128,919.30 and 41,590.60

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Solution

The fourth proportional to 85,924.60, 128,919.30 and 41,590.60 is: 62,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,924.60 : 128,919.30 = 41,590.60 : x
  2. Step 2: Convert to fraction form
    85,924.60/128,919.30 = 41,590.60/x
  3. Step 3: Cross multiply
    85,924.60x = 128,919.30 × 41,590.60
  4. Step 4: Simplify right side
    85,924.60x = 5,361,831,038.58
  5. Step 5: Solve for x
    x = 5,361,831,038.58/85,924.60
  6. Step 6: Final answer
    x = 62,401.58

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1.5x scale

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.