Home / 65,664.37-90,613.13-38,809.38

Finding the Fourth Proportional to 65,664.37, 90,613.13 and 38,809.38

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Solution

The fourth proportional to 65,664.37, 90,613.13 and 38,809.38 is: 53,554.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,664.37 : 90,613.13 = 38,809.38 : x
  2. Step 2: Convert to fraction form
    65,664.37/90,613.13 = 38,809.38/x
  3. Step 3: Cross multiply
    65,664.37x = 90,613.13 × 38,809.38
  4. Step 4: Simplify right side
    65,664.37x = 3,516,639,249.52
  5. Step 5: Solve for x
    x = 3,516,639,249.52/65,664.37
  6. Step 6: Final answer
    x = 53,554.75

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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.