Home / 85,603,557.94-128,378,363.91-28,082,425.30

Finding the Fourth Proportional to 85,603,557.94, 128,378,363.91 and 28,082,425.30

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Solution

The fourth proportional to 85,603,557.94, 128,378,363.91 and 28,082,425.30 is: 42,114,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,557.94 : 128,378,363.91 = 28,082,425.30 : x
  2. Step 2: Convert to fraction form
    85,603,557.94/128,378,363.91 = 28,082,425.30/x
  3. Step 3: Cross multiply
    85,603,557.94x = 128,378,363.91 × 28,082,425.30
  4. Step 4: Simplify right side
    85,603,557.94x = 3,605,175,814,212,536
  5. Step 5: Solve for x
    x = 3,605,175,814,212,536/85,603,557.94
  6. Step 6: Final answer
    x = 42,114,789.40

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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.