Home / 78,987.76-118,416.03-55,227.37

Finding the Fourth Proportional to 78,987.76, 118,416.03 and 55,227.37

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Solution

The fourth proportional to 78,987.76, 118,416.03 and 55,227.37 is: 82,795.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987.76 : 118,416.03 = 55,227.37 : x
  2. Step 2: Convert to fraction form
    78,987.76/118,416.03 = 55,227.37/x
  3. Step 3: Cross multiply
    78,987.76x = 118,416.03 × 55,227.37
  4. Step 4: Simplify right side
    78,987.76x = 6,539,805,621.63
  5. Step 5: Solve for x
    x = 6,539,805,621.63/78,987.76
  6. Step 6: Final answer
    x = 82,795.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.