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Finding the Fourth Proportional to 73,071.20, 100,828.14 and 40,801.88

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Solution

The fourth proportional to 73,071.20, 100,828.14 and 40,801.88 is: 56,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,071.20 : 100,828.14 = 40,801.88 : x
  2. Step 2: Convert to fraction form
    73,071.20/100,828.14 = 40,801.88/x
  3. Step 3: Cross multiply
    73,071.20x = 100,828.14 × 40,801.88
  4. Step 4: Simplify right side
    73,071.20x = 4,113,977,668.90
  5. Step 5: Solve for x
    x = 4,113,977,668.90/73,071.20
  6. Step 6: Final answer
    x = 56,300.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.