Home / 92,771.11-128,020.20-52,485.56

Finding the Fourth Proportional to 92,771.11, 128,020.20 and 52,485.56

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Solution

The fourth proportional to 92,771.11, 128,020.20 and 52,485.56 is: 72,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,771.11 : 128,020.20 = 52,485.56 : x
  2. Step 2: Convert to fraction form
    92,771.11/128,020.20 = 52,485.56/x
  3. Step 3: Cross multiply
    92,771.11x = 128,020.20 × 52,485.56
  4. Step 4: Simplify right side
    92,771.11x = 6,719,211,888.31
  5. Step 5: Solve for x
    x = 6,719,211,888.31/92,771.11
  6. Step 6: Final answer
    x = 72,427.85

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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.