Home / 64,621.12-89,181.84-39,475.36

Finding the Fourth Proportional to 64,621.12, 89,181.84 and 39,475.36

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Solution

The fourth proportional to 64,621.12, 89,181.84 and 39,475.36 is: 54,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,621.12 : 89,181.84 = 39,475.36 : x
  2. Step 2: Convert to fraction form
    64,621.12/89,181.84 = 39,475.36/x
  3. Step 3: Cross multiply
    64,621.12x = 89,181.84 × 39,475.36
  4. Step 4: Simplify right side
    64,621.12x = 3,520,485,239.46
  5. Step 5: Solve for x
    x = 3,520,485,239.46/64,621.12
  6. Step 6: Final answer
    x = 54,478.86

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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.