Home / 76,912.94-106,139.88-42,457.69

Finding the Fourth Proportional to 76,912.94, 106,139.88 and 42,457.69

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Solution

The fourth proportional to 76,912.94, 106,139.88 and 42,457.69 is: 58,591.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.94 : 106,139.88 = 42,457.69 : x
  2. Step 2: Convert to fraction form
    76,912.94/106,139.88 = 42,457.69/x
  3. Step 3: Cross multiply
    76,912.94x = 106,139.88 × 42,457.69
  4. Step 4: Simplify right side
    76,912.94x = 4,506,454,121.68
  5. Step 5: Solve for x
    x = 4,506,454,121.68/76,912.94
  6. Step 6: Final answer
    x = 58,591.62

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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.