Home / 85,904.55-128,825.96-29,729.42

Finding the Fourth Proportional to 85,904.55, 128,825.96 and 29,729.42

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Solution

The fourth proportional to 85,904.55, 128,825.96 and 29,729.42 is: 44,583.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,904.55 : 128,825.96 = 29,729.42 : x
  2. Step 2: Convert to fraction form
    85,904.55/128,825.96 = 29,729.42/x
  3. Step 3: Cross multiply
    85,904.55x = 128,825.96 × 29,729.42
  4. Step 4: Simplify right side
    85,904.55x = 3,829,920,278.97
  5. Step 5: Solve for x
    x = 3,829,920,278.97/85,904.55
  6. Step 6: Final answer
    x = 44,583.44

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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.