Home / 66,513.09-91,821.93-51,371.76

Finding the Fourth Proportional to 66,513.09, 91,821.93 and 51,371.76

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Solution

The fourth proportional to 66,513.09, 91,821.93 and 51,371.76 is: 70,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,513.09 : 91,821.93 = 51,371.76 : x
  2. Step 2: Convert to fraction form
    66,513.09/91,821.93 = 51,371.76/x
  3. Step 3: Cross multiply
    66,513.09x = 91,821.93 × 51,371.76
  4. Step 4: Simplify right side
    66,513.09x = 4,717,054,150.70
  5. Step 5: Solve for x
    x = 4,717,054,150.70/66,513.09
  6. Step 6: Final answer
    x = 70,919.19

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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.