Home / 85,804,028.80-128,706,043.20-61,491,587.20

Finding the Fourth Proportional to 85,804,028.80, 128,706,043.20 and 61,491,587.20

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Solution

The fourth proportional to 85,804,028.80, 128,706,043.20 and 61,491,587.20 is: 92,237,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,804,028.80 : 128,706,043.20 = 61,491,587.20 : x
  2. Step 2: Convert to fraction form
    85,804,028.80/128,706,043.20 = 61,491,587.20/x
  3. Step 3: Cross multiply
    85,804,028.80x = 128,706,043.20 × 61,491,587.20
  4. Step 4: Simplify right side
    85,804,028.80x = 7,914,338,878,599,768
  5. Step 5: Solve for x
    x = 7,914,338,878,599,768/85,804,028.80
  6. Step 6: Final answer
    x = 92,237,380.80

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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.