Home / 78,457,415.72-108,272,229.64-43,179,282.64

Finding the Fourth Proportional to 78,457,415.72, 108,272,229.64 and 43,179,282.64

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Solution

The fourth proportional to 78,457,415.72, 108,272,229.64 and 43,179,282.64 is: 59,587,958.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457,415.72 : 108,272,229.64 = 43,179,282.64 : x
  2. Step 2: Convert to fraction form
    78,457,415.72/108,272,229.64 = 43,179,282.64/x
  3. Step 3: Cross multiply
    78,457,415.72x = 108,272,229.64 × 43,179,282.64
  4. Step 4: Simplify right side
    78,457,415.72x = 4,675,117,205,688,546
  5. Step 5: Solve for x
    x = 4,675,117,205,688,546/78,457,415.72
  6. Step 6: Final answer
    x = 59,587,958.17

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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.