Home / 65,417.75-90,288.27-38,558.69

Finding the Fourth Proportional to 65,417.75, 90,288.27 and 38,558.69

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Solution

The fourth proportional to 65,417.75, 90,288.27 and 38,558.69 is: 53,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,417.75 : 90,288.27 = 38,558.69 : x
  2. Step 2: Convert to fraction form
    65,417.75/90,288.27 = 38,558.69/x
  3. Step 3: Cross multiply
    65,417.75x = 90,288.27 × 38,558.69
  4. Step 4: Simplify right side
    65,417.75x = 3,481,396,962.12
  5. Step 5: Solve for x
    x = 3,481,396,962.12/65,417.75
  6. Step 6: Final answer
    x = 53,217.93

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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.