Home / 83,645.11-115,430.36-45,404.64

Finding the Fourth Proportional to 83,645.11, 115,430.36 and 45,404.64

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Solution

The fourth proportional to 83,645.11, 115,430.36 and 45,404.64 is: 62,658.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.11 : 115,430.36 = 45,404.64 : x
  2. Step 2: Convert to fraction form
    83,645.11/115,430.36 = 45,404.64/x
  3. Step 3: Cross multiply
    83,645.11x = 115,430.36 × 45,404.64
  4. Step 4: Simplify right side
    83,645.11x = 5,241,073,940.87
  5. Step 5: Solve for x
    x = 5,241,073,940.87/83,645.11
  6. Step 6: Final answer
    x = 62,658.46

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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.