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Finding the Fourth Proportional to 66,669.75, 100,004.76 and 17,421.75

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Solution

The fourth proportional to 66,669.75, 100,004.76 and 17,421.75 is: 26,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,669.75 : 100,004.76 = 17,421.75 : x
  2. Step 2: Convert to fraction form
    66,669.75/100,004.76 = 17,421.75/x
  3. Step 3: Cross multiply
    66,669.75x = 100,004.76 × 17,421.75
  4. Step 4: Simplify right side
    66,669.75x = 1,742,257,927.53
  5. Step 5: Solve for x
    x = 1,742,257,927.53/66,669.75
  6. Step 6: Final answer
    x = 26,132.66

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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.