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Finding the Fourth Proportional to 55,359.40, 83,039.06 and 18,423.40

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Solution

The fourth proportional to 55,359.40, 83,039.06 and 18,423.40 is: 27,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,359.40 : 83,039.06 = 18,423.40 : x
  2. Step 2: Convert to fraction form
    55,359.40/83,039.06 = 18,423.40/x
  3. Step 3: Cross multiply
    55,359.40x = 83,039.06 × 18,423.40
  4. Step 4: Simplify right side
    55,359.40x = 1,529,861,818.00
  5. Step 5: Solve for x
    x = 1,529,861,818.00/55,359.40
  6. Step 6: Final answer
    x = 27,635.09

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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.