Home / 89,160.80-123,042.24-51,435.20

Finding the Fourth Proportional to 89,160.80, 123,042.24 and 51,435.20

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Solution

The fourth proportional to 89,160.80, 123,042.24 and 51,435.20 is: 70,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,160.80 : 123,042.24 = 51,435.20 : x
  2. Step 2: Convert to fraction form
    89,160.80/123,042.24 = 51,435.20/x
  3. Step 3: Cross multiply
    89,160.80x = 123,042.24 × 51,435.20
  4. Step 4: Simplify right side
    89,160.80x = 6,328,702,222.85
  5. Step 5: Solve for x
    x = 6,328,702,222.85/89,160.80
  6. Step 6: Final answer
    x = 70,980.77

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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.