Home / 62,989.40-86,894.75-40,310.21

Finding the Fourth Proportional to 62,989.40, 86,894.75 and 40,310.21

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Solution

The fourth proportional to 62,989.40, 86,894.75 and 40,310.21 is: 55,608.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,989.40 : 86,894.75 = 40,310.21 : x
  2. Step 2: Convert to fraction form
    62,989.40/86,894.75 = 40,310.21/x
  3. Step 3: Cross multiply
    62,989.40x = 86,894.75 × 40,310.21
  4. Step 4: Simplify right side
    62,989.40x = 3,502,745,336.25
  5. Step 5: Solve for x
    x = 3,502,745,336.25/62,989.40
  6. Step 6: Final answer
    x = 55,608.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.