Home / 55,589.03-76,712.10-30,438.53

Finding the Fourth Proportional to 55,589.03, 76,712.10 and 30,438.53

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Solution

The fourth proportional to 55,589.03, 76,712.10 and 30,438.53 is: 42,004.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,589.03 : 76,712.10 = 30,438.53 : x
  2. Step 2: Convert to fraction form
    55,589.03/76,712.10 = 30,438.53/x
  3. Step 3: Cross multiply
    55,589.03x = 76,712.10 × 30,438.53
  4. Step 4: Simplify right side
    55,589.03x = 2,335,003,557.21
  5. Step 5: Solve for x
    x = 2,335,003,557.21/55,589.03
  6. Step 6: Final answer
    x = 42,004.75

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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.