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Finding the Fourth Proportional to 55,575.20, 76,693.77 and 30,424.70

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Solution

The fourth proportional to 55,575.20, 76,693.77 and 30,424.70 is: 41,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,575.20 : 76,693.77 = 30,424.70 : x
  2. Step 2: Convert to fraction form
    55,575.20/76,693.77 = 30,424.70/x
  3. Step 3: Cross multiply
    55,575.20x = 76,693.77 × 30,424.70
  4. Step 4: Simplify right side
    55,575.20x = 2,333,384,560.65
  5. Step 5: Solve for x
    x = 2,333,384,560.65/55,575.20
  6. Step 6: Final answer
    x = 41,986.08

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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.