Home / 70,489.10-105,709.06-28,358.26

Finding the Fourth Proportional to 70,489.10, 105,709.06 and 28,358.26

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Solution

The fourth proportional to 70,489.10, 105,709.06 and 28,358.26 is: 42,527.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.10 : 105,709.06 = 28,358.26 : x
  2. Step 2: Convert to fraction form
    70,489.10/105,709.06 = 28,358.26/x
  3. Step 3: Cross multiply
    70,489.10x = 105,709.06 × 28,358.26
  4. Step 4: Simplify right side
    70,489.10x = 2,997,724,337.50
  5. Step 5: Solve for x
    x = 2,997,724,337.50/70,489.10
  6. Step 6: Final answer
    x = 42,527.49

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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.