Home / 85,530,502.92-128,333,895.60-39,447,591.60

Finding the Fourth Proportional to 85,530,502.92, 128,333,895.60 and 39,447,591.60

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Solution

The fourth proportional to 85,530,502.92, 128,333,895.60 and 39,447,591.60 is: 59,188,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530,502.92 : 128,333,895.60 = 39,447,591.60 : x
  2. Step 2: Convert to fraction form
    85,530,502.92/128,333,895.60 = 39,447,591.60/x
  3. Step 3: Cross multiply
    85,530,502.92x = 128,333,895.60 × 39,447,591.60
  4. Step 4: Simplify right side
    85,530,502.92x = 5,062,463,102,065,837
  5. Step 5: Solve for x
    x = 5,062,463,102,065,837/85,530,502.92
  6. Step 6: Final answer
    x = 59,188,978.54

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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.