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Finding the Fourth Proportional to 80,703.52, 120,950.40 and 45,163.36

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Solution

The fourth proportional to 80,703.52, 120,950.40 and 45,163.36 is: 67,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,703.52 : 120,950.40 = 45,163.36 : x
  2. Step 2: Convert to fraction form
    80,703.52/120,950.40 = 45,163.36/x
  3. Step 3: Cross multiply
    80,703.52x = 120,950.40 × 45,163.36
  4. Step 4: Simplify right side
    80,703.52x = 5,462,526,457.34
  5. Step 5: Solve for x
    x = 5,462,526,457.34/80,703.52
  6. Step 6: Final answer
    x = 67,686.35

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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.