Home / 51,120.59-70,549.83-30,979.45

Finding the Fourth Proportional to 51,120.59, 70,549.83 and 30,979.45

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Solution

The fourth proportional to 51,120.59, 70,549.83 and 30,979.45 is: 42,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,120.59 : 70,549.83 = 30,979.45 : x
  2. Step 2: Convert to fraction form
    51,120.59/70,549.83 = 30,979.45/x
  3. Step 3: Cross multiply
    51,120.59x = 70,549.83 × 30,979.45
  4. Step 4: Simplify right side
    51,120.59x = 2,185,594,930.99
  5. Step 5: Solve for x
    x = 2,185,594,930.99/51,120.59
  6. Step 6: Final answer
    x = 42,753.71

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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.