Home / 81,290.50-112,185.26-45,478.38

Finding the Fourth Proportional to 81,290.50, 112,185.26 and 45,478.38

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Solution

The fourth proportional to 81,290.50, 112,185.26 and 45,478.38 is: 62,762.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,290.50 : 112,185.26 = 45,478.38 : x
  2. Step 2: Convert to fraction form
    81,290.50/112,185.26 = 45,478.38/x
  3. Step 3: Cross multiply
    81,290.50x = 112,185.26 × 45,478.38
  4. Step 4: Simplify right side
    81,290.50x = 5,102,003,884.68
  5. Step 5: Solve for x
    x = 5,102,003,884.68/81,290.50
  6. Step 6: Final answer
    x = 62,762.61

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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.