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Finding the Fourth Proportional to 89,833.80, 134,750.70 and 30,660.60

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Solution

The fourth proportional to 89,833.80, 134,750.70 and 30,660.60 is: 45,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,833.80 : 134,750.70 = 30,660.60 : x
  2. Step 2: Convert to fraction form
    89,833.80/134,750.70 = 30,660.60/x
  3. Step 3: Cross multiply
    89,833.80x = 134,750.70 × 30,660.60
  4. Step 4: Simplify right side
    89,833.80x = 4,131,537,312.42
  5. Step 5: Solve for x
    x = 4,131,537,312.42/89,833.80
  6. Step 6: Final answer
    x = 45,990.90

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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.