Home / 76,920.92-115,381.42-30,187.16

Finding the Fourth Proportional to 76,920.92, 115,381.42 and 30,187.16

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Solution

The fourth proportional to 76,920.92, 115,381.42 and 30,187.16 is: 45,280.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,920.92 : 115,381.42 = 30,187.16 : x
  2. Step 2: Convert to fraction form
    76,920.92/115,381.42 = 30,187.16/x
  3. Step 3: Cross multiply
    76,920.92x = 115,381.42 × 30,187.16
  4. Step 4: Simplify right side
    76,920.92x = 3,483,037,386.57
  5. Step 5: Solve for x
    x = 3,483,037,386.57/76,920.92
  6. Step 6: Final answer
    x = 45,280.76

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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.