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Finding the Fourth Proportional to 81,340.92, 112,216.50 and 53,045.64

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Solution

The fourth proportional to 81,340.92, 112,216.50 and 53,045.64 is: 73,180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,340.92 : 112,216.50 = 53,045.64 : x
  2. Step 2: Convert to fraction form
    81,340.92/112,216.50 = 53,045.64/x
  3. Step 3: Cross multiply
    81,340.92x = 112,216.50 × 53,045.64
  4. Step 4: Simplify right side
    81,340.92x = 5,952,596,061.06
  5. Step 5: Solve for x
    x = 5,952,596,061.06/81,340.92
  6. Step 6: Final answer
    x = 73,180.83

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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.