Home / 81,393,032.40-122,089,548.60-55,564,999.80

Finding the Fourth Proportional to 81,393,032.40, 122,089,548.60 and 55,564,999.80

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Solution

The fourth proportional to 81,393,032.40, 122,089,548.60 and 55,564,999.80 is: 83,347,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393,032.40 : 122,089,548.60 = 55,564,999.80 : x
  2. Step 2: Convert to fraction form
    81,393,032.40/122,089,548.60 = 55,564,999.80/x
  3. Step 3: Cross multiply
    81,393,032.40x = 122,089,548.60 × 55,564,999.80
  4. Step 4: Simplify right side
    81,393,032.40x = 6,783,905,743,541,090
  5. Step 5: Solve for x
    x = 6,783,905,743,541,090/81,393,032.40
  6. Step 6: Final answer
    x = 83,347,499.70

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Similar ratio
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1.5x scale

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.