Home / 85,968,266.70-128,952,400.05-57,120,861.90

Finding the Fourth Proportional to 85,968,266.70, 128,952,400.05 and 57,120,861.90

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Solution

The fourth proportional to 85,968,266.70, 128,952,400.05 and 57,120,861.90 is: 85,681,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,266.70 : 128,952,400.05 = 57,120,861.90 : x
  2. Step 2: Convert to fraction form
    85,968,266.70/128,952,400.05 = 57,120,861.90/x
  3. Step 3: Cross multiply
    85,968,266.70x = 128,952,400.05 × 57,120,861.90
  4. Step 4: Simplify right side
    85,968,266.70x = 7,365,872,234,929,603
  5. Step 5: Solve for x
    x = 7,365,872,234,929,603/85,968,266.70
  6. Step 6: Final answer
    x = 85,681,292.85

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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.