Home / 65,483.75-90,378.45-38,632.86

Finding the Fourth Proportional to 65,483.75, 90,378.45 and 38,632.86

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Solution

The fourth proportional to 65,483.75, 90,378.45 and 38,632.86 is: 53,319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,483.75 : 90,378.45 = 38,632.86 : x
  2. Step 2: Convert to fraction form
    65,483.75/90,378.45 = 38,632.86/x
  3. Step 3: Cross multiply
    65,483.75x = 90,378.45 × 38,632.86
  4. Step 4: Simplify right side
    65,483.75x = 3,491,578,005.87
  5. Step 5: Solve for x
    x = 3,491,578,005.87/65,483.75
  6. Step 6: Final answer
    x = 53,319.76

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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.