Home / 78,467.03-108,283.22-42,657.95

Finding the Fourth Proportional to 78,467.03, 108,283.22 and 42,657.95

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Solution

The fourth proportional to 78,467.03, 108,283.22 and 42,657.95 is: 58,867.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,467.03 : 108,283.22 = 42,657.95 : x
  2. Step 2: Convert to fraction form
    78,467.03/108,283.22 = 42,657.95/x
  3. Step 3: Cross multiply
    78,467.03x = 108,283.22 × 42,657.95
  4. Step 4: Simplify right side
    78,467.03x = 4,619,139,429.89
  5. Step 5: Solve for x
    x = 4,619,139,429.89/78,467.03
  6. Step 6: Final answer
    x = 58,867.27

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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.