Home / 78,297.96-117,432.36-36,176.40

Finding the Fourth Proportional to 78,297.96, 117,432.36 and 36,176.40

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Solution

The fourth proportional to 78,297.96, 117,432.36 and 36,176.40 is: 54,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,297.96 : 117,432.36 = 36,176.40 : x
  2. Step 2: Convert to fraction form
    78,297.96/117,432.36 = 36,176.40/x
  3. Step 3: Cross multiply
    78,297.96x = 117,432.36 × 36,176.40
  4. Step 4: Simplify right side
    78,297.96x = 4,248,280,028.30
  5. Step 5: Solve for x
    x = 4,248,280,028.30/78,297.96
  6. Step 6: Final answer
    x = 54,257.86

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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.