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Finding the Fourth Proportional to 84,970.40, 127,552.80 and 49,929.80

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Solution

The fourth proportional to 84,970.40, 127,552.80 and 49,929.80 is: 74,951.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.40 : 127,552.80 = 49,929.80 : x
  2. Step 2: Convert to fraction form
    84,970.40/127,552.80 = 49,929.80/x
  3. Step 3: Cross multiply
    84,970.40x = 127,552.80 × 49,929.80
  4. Step 4: Simplify right side
    84,970.40x = 6,368,685,793.44
  5. Step 5: Solve for x
    x = 6,368,685,793.44/84,970.40
  6. Step 6: Final answer
    x = 74,951.82

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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.