Home / 55,780.52-76,977.38-30,630

Finding the Fourth Proportional to 55,780.52, 76,977.38 and 30,630

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Solution

The fourth proportional to 55,780.52, 76,977.38 and 30,630 is: 42,269.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,780.52 : 76,977.38 = 30,630 : x
  2. Step 2: Convert to fraction form
    55,780.52/76,977.38 = 30,630/x
  3. Step 3: Cross multiply
    55,780.52x = 76,977.38 × 30,630
  4. Step 4: Simplify right side
    55,780.52x = 2,357,817,149.40
  5. Step 5: Solve for x
    x = 2,357,817,149.40/55,780.52
  6. Step 6: Final answer
    x = 42,269.54

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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.