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Finding the Fourth Proportional to 53,479.76, 73,803.13 and 31,991.65

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Solution

The fourth proportional to 53,479.76, 73,803.13 and 31,991.65 is: 44,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,479.76 : 73,803.13 = 31,991.65 : x
  2. Step 2: Convert to fraction form
    53,479.76/73,803.13 = 31,991.65/x
  3. Step 3: Cross multiply
    53,479.76x = 73,803.13 × 31,991.65
  4. Step 4: Simplify right side
    53,479.76x = 2,361,083,639.38
  5. Step 5: Solve for x
    x = 2,361,083,639.38/53,479.76
  6. Step 6: Final answer
    x = 44,149.11

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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.