Home / 71,218.32-98,272.76-39,382.89

Finding the Fourth Proportional to 71,218.32, 98,272.76 and 39,382.89

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Solution

The fourth proportional to 71,218.32, 98,272.76 and 39,382.89 is: 54,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.32 : 98,272.76 = 39,382.89 : x
  2. Step 2: Convert to fraction form
    71,218.32/98,272.76 = 39,382.89/x
  3. Step 3: Cross multiply
    71,218.32x = 98,272.76 × 39,382.89
  4. Step 4: Simplify right side
    71,218.32x = 3,870,265,100.16
  5. Step 5: Solve for x
    x = 3,870,265,100.16/71,218.32
  6. Step 6: Final answer
    x = 54,343.67

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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.