Home / 78,052,153.72-117,085,454.86-25,530,123.40

Finding the Fourth Proportional to 78,052,153.72, 117,085,454.86 and 25,530,123.40

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Solution

The fourth proportional to 78,052,153.72, 117,085,454.86 and 25,530,123.40 is: 38,297,548.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,052,153.72 : 117,085,454.86 = 25,530,123.40 : x
  2. Step 2: Convert to fraction form
    78,052,153.72/117,085,454.86 = 25,530,123.40/x
  3. Step 3: Cross multiply
    78,052,153.72x = 117,085,454.86 × 25,530,123.40
  4. Step 4: Simplify right side
    78,052,153.72x = 2,989,206,110,920,929.50
  5. Step 5: Solve for x
    x = 2,989,206,110,920,929.50/78,052,153.72
  6. Step 6: Final answer
    x = 38,297,548.09

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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.