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Finding the Fourth Proportional to 66,638.00, 91,959.05 and 36,423.54

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Solution

The fourth proportional to 66,638.00, 91,959.05 and 36,423.54 is: 50,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.00 : 91,959.05 = 36,423.54 : x
  2. Step 2: Convert to fraction form
    66,638.00/91,959.05 = 36,423.54/x
  3. Step 3: Cross multiply
    66,638.00x = 91,959.05 × 36,423.54
  4. Step 4: Simplify right side
    66,638.00x = 3,349,473,953.92
  5. Step 5: Solve for x
    x = 3,349,473,953.92/66,638.00
  6. Step 6: Final answer
    x = 50,263.73

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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.