Home / 65,739.66-90,727.08-38,890.80

Finding the Fourth Proportional to 65,739.66, 90,727.08 and 38,890.80

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Solution

The fourth proportional to 65,739.66, 90,727.08 and 38,890.80 is: 53,673.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,739.66 : 90,727.08 = 38,890.80 : x
  2. Step 2: Convert to fraction form
    65,739.66/90,727.08 = 38,890.80/x
  3. Step 3: Cross multiply
    65,739.66x = 90,727.08 × 38,890.80
  4. Step 4: Simplify right side
    65,739.66x = 3,528,448,722.86
  5. Step 5: Solve for x
    x = 3,528,448,722.86/65,739.66
  6. Step 6: Final answer
    x = 53,673.06

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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.