Home / 85,906.55-128,828.95-29,731.42

Finding the Fourth Proportional to 85,906.55, 128,828.95 and 29,731.42

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Solution

The fourth proportional to 85,906.55, 128,828.95 and 29,731.42 is: 44,586.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,906.55 : 128,828.95 = 29,731.42 : x
  2. Step 2: Convert to fraction form
    85,906.55/128,828.95 = 29,731.42/x
  3. Step 3: Cross multiply
    85,906.55x = 128,828.95 × 29,731.42
  4. Step 4: Simplify right side
    85,906.55x = 3,830,267,620.61
  5. Step 5: Solve for x
    x = 3,830,267,620.61/85,906.55
  6. Step 6: Final answer
    x = 44,586.44

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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.