Home / 72,511.05-100,064.83-40,679.88

Finding the Fourth Proportional to 72,511.05, 100,064.83 and 40,679.88

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Solution

The fourth proportional to 72,511.05, 100,064.83 and 40,679.88 is: 56,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.05 : 100,064.83 = 40,679.88 : x
  2. Step 2: Convert to fraction form
    72,511.05/100,064.83 = 40,679.88/x
  3. Step 3: Cross multiply
    72,511.05x = 100,064.83 × 40,679.88
  4. Step 4: Simplify right side
    72,511.05x = 4,070,625,276.62
  5. Step 5: Solve for x
    x = 4,070,625,276.62/72,511.05
  6. Step 6: Final answer
    x = 56,138.00

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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.