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Finding the Fourth Proportional to 55,354.54, 76,390.95 and 31,484.65

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Solution

The fourth proportional to 55,354.54, 76,390.95 and 31,484.65 is: 43,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,354.54 : 76,390.95 = 31,484.65 : x
  2. Step 2: Convert to fraction form
    55,354.54/76,390.95 = 31,484.65/x
  3. Step 3: Cross multiply
    55,354.54x = 76,390.95 × 31,484.65
  4. Step 4: Simplify right side
    55,354.54x = 2,405,142,323.92
  5. Step 5: Solve for x
    x = 2,405,142,323.92/55,354.54
  6. Step 6: Final answer
    x = 43,449.78

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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.