Home / 78,258.86-117,402.90-25,683.38

Finding the Fourth Proportional to 78,258.86, 117,402.90 and 25,683.38

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Solution

The fourth proportional to 78,258.86, 117,402.90 and 25,683.38 is: 38,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,258.86 : 117,402.90 = 25,683.38 : x
  2. Step 2: Convert to fraction form
    78,258.86/117,402.90 = 25,683.38/x
  3. Step 3: Cross multiply
    78,258.86x = 117,402.90 × 25,683.38
  4. Step 4: Simplify right side
    78,258.86x = 3,015,303,293.80
  5. Step 5: Solve for x
    x = 3,015,303,293.80/78,258.86
  6. Step 6: Final answer
    x = 38,529.86

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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.