Home / 78,160.21-117,256.73-25,565.59

Finding the Fourth Proportional to 78,160.21, 117,256.73 and 25,565.59

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Solution

The fourth proportional to 78,160.21, 117,256.73 and 25,565.59 is: 38,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,160.21 : 117,256.73 = 25,565.59 : x
  2. Step 2: Convert to fraction form
    78,160.21/117,256.73 = 25,565.59/x
  3. Step 3: Cross multiply
    78,160.21x = 117,256.73 × 25,565.59
  4. Step 4: Simplify right side
    78,160.21x = 2,997,737,483.92
  5. Step 5: Solve for x
    x = 2,997,737,483.92/78,160.21
  6. Step 6: Final answer
    x = 38,353.75

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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.