Home / 85,752,092.20-128,628,138.30-49,472,386.60

Finding the Fourth Proportional to 85,752,092.20, 128,628,138.30 and 49,472,386.60

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Solution

The fourth proportional to 85,752,092.20, 128,628,138.30 and 49,472,386.60 is: 74,208,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752,092.20 : 128,628,138.30 = 49,472,386.60 : x
  2. Step 2: Convert to fraction form
    85,752,092.20/128,628,138.30 = 49,472,386.60/x
  3. Step 3: Cross multiply
    85,752,092.20x = 128,628,138.30 × 49,472,386.60
  4. Step 4: Simplify right side
    85,752,092.20x = 6,363,540,985,615,867
  5. Step 5: Solve for x
    x = 6,363,540,985,615,867/85,752,092.20
  6. Step 6: Final answer
    x = 74,208,579.90

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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.