Home / 65,385.36-90,251.10-38,536.56

Finding the Fourth Proportional to 65,385.36, 90,251.10 and 38,536.56

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Solution

The fourth proportional to 65,385.36, 90,251.10 and 38,536.56 is: 53,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,385.36 : 90,251.10 = 38,536.56 : x
  2. Step 2: Convert to fraction form
    65,385.36/90,251.10 = 38,536.56/x
  3. Step 3: Cross multiply
    65,385.36x = 90,251.10 × 38,536.56
  4. Step 4: Simplify right side
    65,385.36x = 3,477,966,930.22
  5. Step 5: Solve for x
    x = 3,477,966,930.22/65,385.36
  6. Step 6: Final answer
    x = 53,191.83

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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.