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Finding the Fourth Proportional to 71,297.28, 98,386.02 and 39,464.28

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Solution

The fourth proportional to 71,297.28, 98,386.02 and 39,464.28 is: 54,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,297.28 : 98,386.02 = 39,464.28 : x
  2. Step 2: Convert to fraction form
    71,297.28/98,386.02 = 39,464.28/x
  3. Step 3: Cross multiply
    71,297.28x = 98,386.02 × 39,464.28
  4. Step 4: Simplify right side
    71,297.28x = 3,882,733,441.37
  5. Step 5: Solve for x
    x = 3,882,733,441.37/71,297.28
  6. Step 6: Final answer
    x = 54,458.37

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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.