Home / 78,303.06-108,104.65-51,491.81

Finding the Fourth Proportional to 78,303.06, 108,104.65 and 51,491.81

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Solution

The fourth proportional to 78,303.06, 108,104.65 and 51,491.81 is: 71,089.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,303.06 : 108,104.65 = 51,491.81 : x
  2. Step 2: Convert to fraction form
    78,303.06/108,104.65 = 51,491.81/x
  3. Step 3: Cross multiply
    78,303.06x = 108,104.65 × 51,491.81
  4. Step 4: Simplify right side
    78,303.06x = 5,566,504,239.45
  5. Step 5: Solve for x
    x = 5,566,504,239.45/78,303.06
  6. Step 6: Final answer
    x = 71,089.23

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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.