Home / 40,416.78-60,626.80-20,690.04

Finding the Fourth Proportional to 40,416.78, 60,626.80 and 20,690.04

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Solution

The fourth proportional to 40,416.78, 60,626.80 and 20,690.04 is: 31,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,416.78 : 60,626.80 = 20,690.04 : x
  2. Step 2: Convert to fraction form
    40,416.78/60,626.80 = 20,690.04/x
  3. Step 3: Cross multiply
    40,416.78x = 60,626.80 × 20,690.04
  4. Step 4: Simplify right side
    40,416.78x = 1,254,370,917.07
  5. Step 5: Solve for x
    x = 1,254,370,917.07/40,416.78
  6. Step 6: Final answer
    x = 31,035.89

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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.