Home / 78,253.86-117,395.37-25,678.38

Finding the Fourth Proportional to 78,253.86, 117,395.37 and 25,678.38

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Solution

The fourth proportional to 78,253.86, 117,395.37 and 25,678.38 is: 38,522.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.86 : 117,395.37 = 25,678.38 : x
  2. Step 2: Convert to fraction form
    78,253.86/117,395.37 = 25,678.38/x
  3. Step 3: Cross multiply
    78,253.86x = 117,395.37 × 25,678.38
  4. Step 4: Simplify right side
    78,253.86x = 3,014,522,921.10
  5. Step 5: Solve for x
    x = 3,014,522,921.10/78,253.86
  6. Step 6: Final answer
    x = 38,522.35

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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.