Home / 85,393,038.66-128,089,559.34-20,696,843.72

Finding the Fourth Proportional to 85,393,038.66, 128,089,559.34 and 20,696,843.72

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Solution

The fourth proportional to 85,393,038.66, 128,089,559.34 and 20,696,843.72 is: 31,045,265.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,393,038.66 : 128,089,559.34 = 20,696,843.72 : x
  2. Step 2: Convert to fraction form
    85,393,038.66/128,089,559.34 = 20,696,843.72/x
  3. Step 3: Cross multiply
    85,393,038.66x = 128,089,559.34 × 20,696,843.72
  4. Step 4: Simplify right side
    85,393,038.66x = 2,651,049,591,823,646.50
  5. Step 5: Solve for x
    x = 2,651,049,591,823,646.50/85,393,038.66
  6. Step 6: Final answer
    x = 31,045,265.91

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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.