Home / 65,313.75-90,141.48-38,458.74

Finding the Fourth Proportional to 65,313.75, 90,141.48 and 38,458.74

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Solution

The fourth proportional to 65,313.75, 90,141.48 and 38,458.74 is: 53,078.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,313.75 : 90,141.48 = 38,458.74 : x
  2. Step 2: Convert to fraction form
    65,313.75/90,141.48 = 38,458.74/x
  3. Step 3: Cross multiply
    65,313.75x = 90,141.48 × 38,458.74
  4. Step 4: Simplify right side
    65,313.75x = 3,466,727,742.54
  5. Step 5: Solve for x
    x = 3,466,727,742.54/65,313.75
  6. Step 6: Final answer
    x = 53,078.07

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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.