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Finding the Fourth Proportional to 78,804,573.30, 118,206,859.95 and 48,571,485.30

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Solution

The fourth proportional to 78,804,573.30, 118,206,859.95 and 48,571,485.30 is: 72,857,227.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804,573.30 : 118,206,859.95 = 48,571,485.30 : x
  2. Step 2: Convert to fraction form
    78,804,573.30/118,206,859.95 = 48,571,485.30/x
  3. Step 3: Cross multiply
    78,804,573.30x = 118,206,859.95 × 48,571,485.30
  4. Step 4: Simplify right side
    78,804,573.30x = 5,741,482,760,420,584
  5. Step 5: Solve for x
    x = 5,741,482,760,420,584/78,804,573.30
  6. Step 6: Final answer
    x = 72,857,227.95

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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.