Home / 84,782.64-127,172.67-28,662.17

Finding the Fourth Proportional to 84,782.64, 127,172.67 and 28,662.17

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Solution

The fourth proportional to 84,782.64, 127,172.67 and 28,662.17 is: 42,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,782.64 : 127,172.67 = 28,662.17 : x
  2. Step 2: Convert to fraction form
    84,782.64/127,172.67 = 28,662.17/x
  3. Step 3: Cross multiply
    84,782.64x = 127,172.67 × 28,662.17
  4. Step 4: Simplify right side
    84,782.64x = 3,645,044,543.58
  5. Step 5: Solve for x
    x = 3,645,044,543.58/84,782.64
  6. Step 6: Final answer
    x = 42,992.82

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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.