Home / 55,780.13-76,976.58-30,631.25

Finding the Fourth Proportional to 55,780.13, 76,976.58 and 30,631.25

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Solution

The fourth proportional to 55,780.13, 76,976.58 and 30,631.25 is: 42,271.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,780.13 : 76,976.58 = 30,631.25 : x
  2. Step 2: Convert to fraction form
    55,780.13/76,976.58 = 30,631.25/x
  3. Step 3: Cross multiply
    55,780.13x = 76,976.58 × 30,631.25
  4. Step 4: Simplify right side
    55,780.13x = 2,357,888,481.24
  5. Step 5: Solve for x
    x = 2,357,888,481.24/55,780.13
  6. Step 6: Final answer
    x = 42,271.12

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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.