Home / 71,977.72-99,312.06-43,678.12

Finding the Fourth Proportional to 71,977.72, 99,312.06 and 43,678.12

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Solution

The fourth proportional to 71,977.72, 99,312.06 and 43,678.12 is: 60,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,977.72 : 99,312.06 = 43,678.12 : x
  2. Step 2: Convert to fraction form
    71,977.72/99,312.06 = 43,678.12/x
  3. Step 3: Cross multiply
    71,977.72x = 99,312.06 × 43,678.12
  4. Step 4: Simplify right side
    71,977.72x = 4,337,764,074.13
  5. Step 5: Solve for x
    x = 4,337,764,074.13/71,977.72
  6. Step 6: Final answer
    x = 60,265.37

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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.