Home / 51,449.42-71,011.22-31,312.78

Finding the Fourth Proportional to 51,449.42, 71,011.22 and 31,312.78

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Solution

The fourth proportional to 51,449.42, 71,011.22 and 31,312.78 is: 43,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,449.42 : 71,011.22 = 31,312.78 : x
  2. Step 2: Convert to fraction form
    51,449.42/71,011.22 = 31,312.78/x
  3. Step 3: Cross multiply
    51,449.42x = 71,011.22 × 31,312.78
  4. Step 4: Simplify right side
    51,449.42x = 2,223,558,709.39
  5. Step 5: Solve for x
    x = 2,223,558,709.39/51,449.42
  6. Step 6: Final answer
    x = 43,218.35

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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.