Home / 51,007.40-70,378.68-30,863.78

Finding the Fourth Proportional to 51,007.40, 70,378.68 and 30,863.78

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Solution

The fourth proportional to 51,007.40, 70,378.68 and 30,863.78 is: 42,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,007.40 : 70,378.68 = 30,863.78 : x
  2. Step 2: Convert to fraction form
    51,007.40/70,378.68 = 30,863.78/x
  3. Step 3: Cross multiply
    51,007.40x = 70,378.68 × 30,863.78
  4. Step 4: Simplify right side
    51,007.40x = 2,172,152,096.21
  5. Step 5: Solve for x
    x = 2,172,152,096.21/51,007.40
  6. Step 6: Final answer
    x = 42,585.04

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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.