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Finding the Fourth Proportional to 65,638.84, 90,580.44 and 37,343.92

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Solution

The fourth proportional to 65,638.84, 90,580.44 and 37,343.92 is: 51,533.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,638.84 : 90,580.44 = 37,343.92 : x
  2. Step 2: Convert to fraction form
    65,638.84/90,580.44 = 37,343.92/x
  3. Step 3: Cross multiply
    65,638.84x = 90,580.44 × 37,343.92
  4. Step 4: Simplify right side
    65,638.84x = 3,382,628,704.92
  5. Step 5: Solve for x
    x = 3,382,628,704.92/65,638.84
  6. Step 6: Final answer
    x = 51,533.95

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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.