Home / 85,982,002.40-128,973,003.60-66,826,506.80

Finding the Fourth Proportional to 85,982,002.40, 128,973,003.60 and 66,826,506.80

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Solution

The fourth proportional to 85,982,002.40, 128,973,003.60 and 66,826,506.80 is: 100,239,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,982,002.40 : 128,973,003.60 = 66,826,506.80 : x
  2. Step 2: Convert to fraction form
    85,982,002.40/128,973,003.60 = 66,826,506.80/x
  3. Step 3: Cross multiply
    85,982,002.40x = 128,973,003.60 × 66,826,506.80
  4. Step 4: Simplify right side
    85,982,002.40x = 8,618,815,302,091,824
  5. Step 5: Solve for x
    x = 8,618,815,302,091,824/85,982,002.40
  6. Step 6: Final answer
    x = 100,239,760.20

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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.