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Finding the Fourth Proportional to 79,321.88, 109,462.19 and 45,328.20

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Solution

The fourth proportional to 79,321.88, 109,462.19 and 45,328.20 is: 62,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.88 : 109,462.19 = 45,328.20 : x
  2. Step 2: Convert to fraction form
    79,321.88/109,462.19 = 45,328.20/x
  3. Step 3: Cross multiply
    79,321.88x = 109,462.19 × 45,328.20
  4. Step 4: Simplify right side
    79,321.88x = 4,961,723,814.12
  5. Step 5: Solve for x
    x = 4,961,723,814.12/79,321.88
  6. Step 6: Final answer
    x = 62,551.77

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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.