Home / 83,647.44-115,433-45,407.76

Finding the Fourth Proportional to 83,647.44, 115,433 and 45,407.76

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Solution

The fourth proportional to 83,647.44, 115,433 and 45,407.76 is: 62,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,647.44 : 115,433 = 45,407.76 : x
  2. Step 2: Convert to fraction form
    83,647.44/115,433 = 45,407.76/x
  3. Step 3: Cross multiply
    83,647.44x = 115,433 × 45,407.76
  4. Step 4: Simplify right side
    83,647.44x = 5,241,553,960.08
  5. Step 5: Solve for x
    x = 5,241,553,960.08/83,647.44
  6. Step 6: Final answer
    x = 62,662.46

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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.