Home / 84,728.91-127,071.09-40,267.20

Finding the Fourth Proportional to 84,728.91, 127,071.09 and 40,267.20

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Solution

The fourth proportional to 84,728.91, 127,071.09 and 40,267.20 is: 60,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,728.91 : 127,071.09 = 40,267.20 : x
  2. Step 2: Convert to fraction form
    84,728.91/127,071.09 = 40,267.20/x
  3. Step 3: Cross multiply
    84,728.91x = 127,071.09 × 40,267.20
  4. Step 4: Simplify right side
    84,728.91x = 5,116,796,995.25
  5. Step 5: Solve for x
    x = 5,116,796,995.25/84,728.91
  6. Step 6: Final answer
    x = 60,390.21

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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.