Home / 65,358.36-90,180.60-38,491.08

Finding the Fourth Proportional to 65,358.36, 90,180.60 and 38,491.08

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Solution

The fourth proportional to 65,358.36, 90,180.60 and 38,491.08 is: 53,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,358.36 : 90,180.60 = 38,491.08 : x
  2. Step 2: Convert to fraction form
    65,358.36/90,180.60 = 38,491.08/x
  3. Step 3: Cross multiply
    65,358.36x = 90,180.60 × 38,491.08
  4. Step 4: Simplify right side
    65,358.36x = 3,471,148,689.05
  5. Step 5: Solve for x
    x = 3,471,148,689.05/65,358.36
  6. Step 6: Final answer
    x = 53,109.48

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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.