Home / 64,615.08-89,141.40-39,450

Finding the Fourth Proportional to 64,615.08, 89,141.40 and 39,450

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Solution

The fourth proportional to 64,615.08, 89,141.40 and 39,450 is: 54,424.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,615.08 : 89,141.40 = 39,450 : x
  2. Step 2: Convert to fraction form
    64,615.08/89,141.40 = 39,450/x
  3. Step 3: Cross multiply
    64,615.08x = 89,141.40 × 39,450
  4. Step 4: Simplify right side
    64,615.08x = 3,516,628,230
  5. Step 5: Solve for x
    x = 3,516,628,230/64,615.08
  6. Step 6: Final answer
    x = 54,424.26

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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.