Home / 51,214.96-70,639.32-39,142.72

Finding the Fourth Proportional to 51,214.96, 70,639.32 and 39,142.72

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Solution

The fourth proportional to 51,214.96, 70,639.32 and 39,142.72 is: 53,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,214.96 : 70,639.32 = 39,142.72 : x
  2. Step 2: Convert to fraction form
    51,214.96/70,639.32 = 39,142.72/x
  3. Step 3: Cross multiply
    51,214.96x = 70,639.32 × 39,142.72
  4. Step 4: Simplify right side
    51,214.96x = 2,765,015,123.75
  5. Step 5: Solve for x
    x = 2,765,015,123.75/51,214.96
  6. Step 6: Final answer
    x = 53,988.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.