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Finding the Fourth Proportional to 66,762.88, 92,131.20 and 38,484.48

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Solution

The fourth proportional to 66,762.88, 92,131.20 and 38,484.48 is: 53,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,762.88 : 92,131.20 = 38,484.48 : x
  2. Step 2: Convert to fraction form
    66,762.88/92,131.20 = 38,484.48/x
  3. Step 3: Cross multiply
    66,762.88x = 92,131.20 × 38,484.48
  4. Step 4: Simplify right side
    66,762.88x = 3,545,621,323.78
  5. Step 5: Solve for x
    x = 3,545,621,323.78/66,762.88
  6. Step 6: Final answer
    x = 53,107.67

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1.5x scale

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.