Home / 78,425,928.69-108,227,171.57-43,142,970.21

Finding the Fourth Proportional to 78,425,928.69, 108,227,171.57 and 43,142,970.21

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Solution

The fourth proportional to 78,425,928.69, 108,227,171.57 and 43,142,970.21 is: 59,536,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425,928.69 : 108,227,171.57 = 43,142,970.21 : x
  2. Step 2: Convert to fraction form
    78,425,928.69/108,227,171.57 = 43,142,970.21/x
  3. Step 3: Cross multiply
    78,425,928.69x = 108,227,171.57 × 43,142,970.21
  4. Step 4: Simplify right side
    78,425,928.69x = 4,669,241,638,741,354
  5. Step 5: Solve for x
    x = 4,669,241,638,741,354/78,425,928.69
  6. Step 6: Final answer
    x = 59,536,963.31

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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.