Home / 80,956.10-121,423.21-21,795.32

Finding the Fourth Proportional to 80,956.10, 121,423.21 and 21,795.32

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Solution

The fourth proportional to 80,956.10, 121,423.21 and 21,795.32 is: 32,690.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,956.10 : 121,423.21 = 21,795.32 : x
  2. Step 2: Convert to fraction form
    80,956.10/121,423.21 = 21,795.32/x
  3. Step 3: Cross multiply
    80,956.10x = 121,423.21 × 21,795.32
  4. Step 4: Simplify right side
    80,956.10x = 2,646,457,966.45
  5. Step 5: Solve for x
    x = 2,646,457,966.45/80,956.10
  6. Step 6: Final answer
    x = 32,690.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.