Home / 70,931.10-106,388-18,336.18

Finding the Fourth Proportional to 70,931.10, 106,388 and 18,336.18

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Solution

The fourth proportional to 70,931.10, 106,388 and 18,336.18 is: 27,502.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,931.10 : 106,388 = 18,336.18 : x
  2. Step 2: Convert to fraction form
    70,931.10/106,388 = 18,336.18/x
  3. Step 3: Cross multiply
    70,931.10x = 106,388 × 18,336.18
  4. Step 4: Simplify right side
    70,931.10x = 1,950,749,517.84
  5. Step 5: Solve for x
    x = 1,950,749,517.84/70,931.10
  6. Step 6: Final answer
    x = 27,502.03

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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.