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Finding the Fourth Proportional to 89,423.60, 134,086.80 and 30,228.80

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Solution

The fourth proportional to 89,423.60, 134,086.80 and 30,228.80 is: 45,326.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,423.60 : 134,086.80 = 30,228.80 : x
  2. Step 2: Convert to fraction form
    89,423.60/134,086.80 = 30,228.80/x
  3. Step 3: Cross multiply
    89,423.60x = 134,086.80 × 30,228.80
  4. Step 4: Simplify right side
    89,423.60x = 4,053,283,059.84
  5. Step 5: Solve for x
    x = 4,053,283,059.84/89,423.60
  6. Step 6: Final answer
    x = 45,326.77

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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.