Home / 71,272.71-106,900.85-18,686.37

Finding the Fourth Proportional to 71,272.71, 106,900.85 and 18,686.37

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Solution

The fourth proportional to 71,272.71, 106,900.85 and 18,686.37 is: 28,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,272.71 : 106,900.85 = 18,686.37 : x
  2. Step 2: Convert to fraction form
    71,272.71/106,900.85 = 18,686.37/x
  3. Step 3: Cross multiply
    71,272.71x = 106,900.85 × 18,686.37
  4. Step 4: Simplify right side
    71,272.71x = 1,997,588,742.98
  5. Step 5: Solve for x
    x = 1,997,588,742.98/71,272.71
  6. Step 6: Final answer
    x = 28,027.40

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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.