Home / 78,381.24-117,642.60-53,019.42

Finding the Fourth Proportional to 78,381.24, 117,642.60 and 53,019.42

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Solution

The fourth proportional to 78,381.24, 117,642.60 and 53,019.42 is: 79,576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381.24 : 117,642.60 = 53,019.42 : x
  2. Step 2: Convert to fraction form
    78,381.24/117,642.60 = 53,019.42/x
  3. Step 3: Cross multiply
    78,381.24x = 117,642.60 × 53,019.42
  4. Step 4: Simplify right side
    78,381.24x = 6,237,342,419.29
  5. Step 5: Solve for x
    x = 6,237,342,419.29/78,381.24
  6. Step 6: Final answer
    x = 79,576.98

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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.