Home / 52,768.40-79,037.40-40,989.20

Finding the Fourth Proportional to 52,768.40, 79,037.40 and 40,989.20

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Solution

The fourth proportional to 52,768.40, 79,037.40 and 40,989.20 is: 61,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,768.40 : 79,037.40 = 40,989.20 : x
  2. Step 2: Convert to fraction form
    52,768.40/79,037.40 = 40,989.20/x
  3. Step 3: Cross multiply
    52,768.40x = 79,037.40 × 40,989.20
  4. Step 4: Simplify right side
    52,768.40x = 3,239,679,796.08
  5. Step 5: Solve for x
    x = 3,239,679,796.08/52,768.40
  6. Step 6: Final answer
    x = 61,394.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.