Home / 55,589.28-76,712.58-30,438.78

Finding the Fourth Proportional to 55,589.28, 76,712.58 and 30,438.78

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Solution

The fourth proportional to 55,589.28, 76,712.58 and 30,438.78 is: 42,005.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,589.28 : 76,712.58 = 30,438.78 : x
  2. Step 2: Convert to fraction form
    55,589.28/76,712.58 = 30,438.78/x
  3. Step 3: Cross multiply
    55,589.28x = 76,712.58 × 30,438.78
  4. Step 4: Simplify right side
    55,589.28x = 2,335,037,345.85
  5. Step 5: Solve for x
    x = 2,335,037,345.85/55,589.28
  6. Step 6: Final answer
    x = 42,005.17

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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.