Home / 78,023,502.79-107,672,431.89-43,218,435.25

Finding the Fourth Proportional to 78,023,502.79, 107,672,431.89 and 43,218,435.25

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Solution

The fourth proportional to 78,023,502.79, 107,672,431.89 and 43,218,435.25 is: 59,641,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023,502.79 : 107,672,431.89 = 43,218,435.25 : x
  2. Step 2: Convert to fraction form
    78,023,502.79/107,672,431.89 = 43,218,435.25/x
  3. Step 3: Cross multiply
    78,023,502.79x = 107,672,431.89 × 43,218,435.25
  4. Step 4: Simplify right side
    78,023,502.79x = 4,653,434,025,848,000
  5. Step 5: Solve for x
    x = 4,653,434,025,848,000/78,023,502.79
  6. Step 6: Final answer
    x = 59,641,439.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.