Home / 78,698,485.85-117,889,635.07-39,187,705.85

Finding the Fourth Proportional to 78,698,485.85, 117,889,635.07 and 39,187,705.85

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Solution

The fourth proportional to 78,698,485.85, 117,889,635.07 and 39,187,705.85 is: 58,702,836.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698,485.85 : 117,889,635.07 = 39,187,705.85 : x
  2. Step 2: Convert to fraction form
    78,698,485.85/117,889,635.07 = 39,187,705.85/x
  3. Step 3: Cross multiply
    78,698,485.85x = 117,889,635.07 × 39,187,705.85
  4. Step 4: Simplify right side
    78,698,485.85x = 4,619,824,341,906,061
  5. Step 5: Solve for x
    x = 4,619,824,341,906,061/78,698,485.85
  6. Step 6: Final answer
    x = 58,702,836.43

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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.