Home / 65,739.83-90,727.35-38,890.99

Finding the Fourth Proportional to 65,739.83, 90,727.35 and 38,890.99

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Solution

The fourth proportional to 65,739.83, 90,727.35 and 38,890.99 is: 53,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,739.83 : 90,727.35 = 38,890.99 : x
  2. Step 2: Convert to fraction form
    65,739.83/90,727.35 = 38,890.99/x
  3. Step 3: Cross multiply
    65,739.83x = 90,727.35 × 38,890.99
  4. Step 4: Simplify right side
    65,739.83x = 3,528,476,234.76
  5. Step 5: Solve for x
    x = 3,528,476,234.76/65,739.83
  6. Step 6: Final answer
    x = 53,673.34

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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.