Home / 82,378.08-123,576.72-29,812.32

Finding the Fourth Proportional to 82,378.08, 123,576.72 and 29,812.32

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Solution

The fourth proportional to 82,378.08, 123,576.72 and 29,812.32 is: 44,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,378.08 : 123,576.72 = 29,812.32 : x
  2. Step 2: Convert to fraction form
    82,378.08/123,576.72 = 29,812.32/x
  3. Step 3: Cross multiply
    82,378.08x = 123,576.72 × 29,812.32
  4. Step 4: Simplify right side
    82,378.08x = 3,684,108,721.19
  5. Step 5: Solve for x
    x = 3,684,108,721.19/82,378.08
  6. Step 6: Final answer
    x = 44,721.95

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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.