Home / 71,956.20-99,287.62-40,124.20

Finding the Fourth Proportional to 71,956.20, 99,287.62 and 40,124.20

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Solution

The fourth proportional to 71,956.20, 99,287.62 and 40,124.20 is: 55,364.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.20 : 99,287.62 = 40,124.20 : x
  2. Step 2: Convert to fraction form
    71,956.20/99,287.62 = 40,124.20/x
  3. Step 3: Cross multiply
    71,956.20x = 99,287.62 × 40,124.20
  4. Step 4: Simplify right side
    71,956.20x = 3,983,836,322.40
  5. Step 5: Solve for x
    x = 3,983,836,322.40/71,956.20
  6. Step 6: Final answer
    x = 55,364.74

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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.