Home / 85,712.45-128,651.59-41,370.41

Finding the Fourth Proportional to 85,712.45, 128,651.59 and 41,370.41

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Solution

The fourth proportional to 85,712.45, 128,651.59 and 41,370.41 is: 62,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,712.45 : 128,651.59 = 41,370.41 : x
  2. Step 2: Convert to fraction form
    85,712.45/128,651.59 = 41,370.41/x
  3. Step 3: Cross multiply
    85,712.45x = 128,651.59 × 41,370.41
  4. Step 4: Simplify right side
    85,712.45x = 5,322,369,398.79
  5. Step 5: Solve for x
    x = 5,322,369,398.79/85,712.45
  6. Step 6: Final answer
    x = 62,095.64

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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.