Home / 78,009.96-117,014.84-25,419.36

Finding the Fourth Proportional to 78,009.96, 117,014.84 and 25,419.36

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Solution

The fourth proportional to 78,009.96, 117,014.84 and 25,419.36 is: 38,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.96 : 117,014.84 = 25,419.36 : x
  2. Step 2: Convert to fraction form
    78,009.96/117,014.84 = 25,419.36/x
  3. Step 3: Cross multiply
    78,009.96x = 117,014.84 × 25,419.36
  4. Step 4: Simplify right side
    78,009.96x = 2,974,442,343.30
  5. Step 5: Solve for x
    x = 2,974,442,343.30/78,009.96
  6. Step 6: Final answer
    x = 38,129.01

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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.