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Finding the Fourth Proportional to 65,785.71, 90,784.34 and 35,571.02

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Solution

The fourth proportional to 65,785.71, 90,784.34 and 35,571.02 is: 49,088.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,785.71 : 90,784.34 = 35,571.02 : x
  2. Step 2: Convert to fraction form
    65,785.71/90,784.34 = 35,571.02/x
  3. Step 3: Cross multiply
    65,785.71x = 90,784.34 × 35,571.02
  4. Step 4: Simplify right side
    65,785.71x = 3,229,291,169.01
  5. Step 5: Solve for x
    x = 3,229,291,169.01/65,785.71
  6. Step 6: Final answer
    x = 49,088.04

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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.