Home / 75,179.60-112,457.75-57,274.79

Finding the Fourth Proportional to 75,179.60, 112,457.75 and 57,274.79

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Solution

The fourth proportional to 75,179.60, 112,457.75 and 57,274.79 is: 85,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,179.60 : 112,457.75 = 57,274.79 : x
  2. Step 2: Convert to fraction form
    75,179.60/112,457.75 = 57,274.79/x
  3. Step 3: Cross multiply
    75,179.60x = 112,457.75 × 57,274.79
  4. Step 4: Simplify right side
    75,179.60x = 6,440,994,439.45
  5. Step 5: Solve for x
    x = 6,440,994,439.45/75,179.60
  6. Step 6: Final answer
    x = 85,674.76

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1.5x scale

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.