Home / 79,421.04-109,485.27-56,719.98

Finding the Fourth Proportional to 79,421.04, 109,485.27 and 56,719.98

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Solution

The fourth proportional to 79,421.04, 109,485.27 and 56,719.98 is: 78,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,421.04 : 109,485.27 = 56,719.98 : x
  2. Step 2: Convert to fraction form
    79,421.04/109,485.27 = 56,719.98/x
  3. Step 3: Cross multiply
    79,421.04x = 109,485.27 × 56,719.98
  4. Step 4: Simplify right side
    79,421.04x = 6,210,002,324.69
  5. Step 5: Solve for x
    x = 6,210,002,324.69/79,421.04
  6. Step 6: Final answer
    x = 78,190.90

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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.