Home / 89,354.80-133,939-30,170.16

Finding the Fourth Proportional to 89,354.80, 133,939 and 30,170.16

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Solution

The fourth proportional to 89,354.80, 133,939 and 30,170.16 is: 45,223.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,354.80 : 133,939 = 30,170.16 : x
  2. Step 2: Convert to fraction form
    89,354.80/133,939 = 30,170.16/x
  3. Step 3: Cross multiply
    89,354.80x = 133,939 × 30,170.16
  4. Step 4: Simplify right side
    89,354.80x = 4,040,961,060.24
  5. Step 5: Solve for x
    x = 4,040,961,060.24/89,354.80
  6. Step 6: Final answer
    x = 45,223.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.