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Finding the Fourth Proportional to 66,762.76, 100,141.52 and 16,842.20

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Solution

The fourth proportional to 66,762.76, 100,141.52 and 16,842.20 is: 25,262.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,762.76 : 100,141.52 = 16,842.20 : x
  2. Step 2: Convert to fraction form
    66,762.76/100,141.52 = 16,842.20/x
  3. Step 3: Cross multiply
    66,762.76x = 100,141.52 × 16,842.20
  4. Step 4: Simplify right side
    66,762.76x = 1,686,603,508.14
  5. Step 5: Solve for x
    x = 1,686,603,508.14/66,762.76
  6. Step 6: Final answer
    x = 25,262.64

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1.5x scale

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.