Home / 78,733.22-108,661.65-45,198.50

Finding the Fourth Proportional to 78,733.22, 108,661.65 and 45,198.50

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Solution

The fourth proportional to 78,733.22, 108,661.65 and 45,198.50 is: 62,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.22 : 108,661.65 = 45,198.50 : x
  2. Step 2: Convert to fraction form
    78,733.22/108,661.65 = 45,198.50/x
  3. Step 3: Cross multiply
    78,733.22x = 108,661.65 × 45,198.50
  4. Step 4: Simplify right side
    78,733.22x = 4,911,343,587.53
  5. Step 5: Solve for x
    x = 4,911,343,587.53/78,733.22
  6. Step 6: Final answer
    x = 62,379.56

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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.