Home / 78,050.24-107,619.55-57,661.81

Finding the Fourth Proportional to 78,050.24, 107,619.55 and 57,661.81

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Solution

The fourth proportional to 78,050.24, 107,619.55 and 57,661.81 is: 79,506.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.24 : 107,619.55 = 57,661.81 : x
  2. Step 2: Convert to fraction form
    78,050.24/107,619.55 = 57,661.81/x
  3. Step 3: Cross multiply
    78,050.24x = 107,619.55 × 57,661.81
  4. Step 4: Simplify right side
    78,050.24x = 6,205,538,044.39
  5. Step 5: Solve for x
    x = 6,205,538,044.39/78,050.24
  6. Step 6: Final answer
    x = 79,506.97

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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.