Home / 84,902.70-127,273.05-31,580.40

Finding the Fourth Proportional to 84,902.70, 127,273.05 and 31,580.40

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Solution

The fourth proportional to 84,902.70, 127,273.05 and 31,580.40 is: 47,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.70 : 127,273.05 = 31,580.40 : x
  2. Step 2: Convert to fraction form
    84,902.70/127,273.05 = 31,580.40/x
  3. Step 3: Cross multiply
    84,902.70x = 127,273.05 × 31,580.40
  4. Step 4: Simplify right side
    84,902.70x = 4,019,333,828.22
  5. Step 5: Solve for x
    x = 4,019,333,828.22/84,902.70
  6. Step 6: Final answer
    x = 47,340.47

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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.