Home / 81,607,010.40-122,410,515.60-55,778,977.80

Finding the Fourth Proportional to 81,607,010.40, 122,410,515.60 and 55,778,977.80

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Solution

The fourth proportional to 81,607,010.40, 122,410,515.60 and 55,778,977.80 is: 83,668,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,010.40 : 122,410,515.60 = 55,778,977.80 : x
  2. Step 2: Convert to fraction form
    81,607,010.40/122,410,515.60 = 55,778,977.80/x
  3. Step 3: Cross multiply
    81,607,010.40x = 122,410,515.60 × 55,778,977.80
  4. Step 4: Simplify right side
    81,607,010.40x = 6,827,933,432,138,953
  5. Step 5: Solve for x
    x = 6,827,933,432,138,953/81,607,010.40
  6. Step 6: Final answer
    x = 83,668,466.70

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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.