Home / 66,754.23-92,129.20-39,911.54

Finding the Fourth Proportional to 66,754.23, 92,129.20 and 39,911.54

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Solution

The fourth proportional to 66,754.23, 92,129.20 and 39,911.54 is: 55,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,754.23 : 92,129.20 = 39,911.54 : x
  2. Step 2: Convert to fraction form
    66,754.23/92,129.20 = 39,911.54/x
  3. Step 3: Cross multiply
    66,754.23x = 92,129.20 × 39,911.54
  4. Step 4: Simplify right side
    66,754.23x = 3,677,017,690.54
  5. Step 5: Solve for x
    x = 3,677,017,690.54/66,754.23
  6. Step 6: Final answer
    x = 55,082.92

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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.