Home / 55,135-76,086.30-29,985.04

Finding the Fourth Proportional to 55,135, 76,086.30 and 29,985.04

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Solution

The fourth proportional to 55,135, 76,086.30 and 29,985.04 is: 41,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,135 : 76,086.30 = 29,985.04 : x
  2. Step 2: Convert to fraction form
    55,135/76,086.30 = 29,985.04/x
  3. Step 3: Cross multiply
    55,135x = 76,086.30 × 29,985.04
  4. Step 4: Simplify right side
    55,135x = 2,281,450,748.95
  5. Step 5: Solve for x
    x = 2,281,450,748.95/55,135
  6. Step 6: Final answer
    x = 41,379.36

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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.