Home / 70,689.28-106,020.94-28,558.34

Finding the Fourth Proportional to 70,689.28, 106,020.94 and 28,558.34

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Solution

The fourth proportional to 70,689.28, 106,020.94 and 28,558.34 is: 42,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,689.28 : 106,020.94 = 28,558.34 : x
  2. Step 2: Convert to fraction form
    70,689.28/106,020.94 = 28,558.34/x
  3. Step 3: Cross multiply
    70,689.28x = 106,020.94 × 28,558.34
  4. Step 4: Simplify right side
    70,689.28x = 3,027,782,051.64
  5. Step 5: Solve for x
    x = 3,027,782,051.64/70,689.28
  6. Step 6: Final answer
    x = 42,832.27

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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.