Home / 73,921.64-102,011.90-39,930.13

Finding the Fourth Proportional to 73,921.64, 102,011.90 and 39,930.13

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Solution

The fourth proportional to 73,921.64, 102,011.90 and 39,930.13 is: 55,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,921.64 : 102,011.90 = 39,930.13 : x
  2. Step 2: Convert to fraction form
    73,921.64/102,011.90 = 39,930.13/x
  3. Step 3: Cross multiply
    73,921.64x = 102,011.90 × 39,930.13
  4. Step 4: Simplify right side
    73,921.64x = 4,073,347,918.49
  5. Step 5: Solve for x
    x = 4,073,347,918.49/73,921.64
  6. Step 6: Final answer
    x = 55,103.60

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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.