Home / 85,021.10-127,527.60-28,855.70

Finding the Fourth Proportional to 85,021.10, 127,527.60 and 28,855.70

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Solution

The fourth proportional to 85,021.10, 127,527.60 and 28,855.70 is: 43,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,021.10 : 127,527.60 = 28,855.70 : x
  2. Step 2: Convert to fraction form
    85,021.10/127,527.60 = 28,855.70/x
  3. Step 3: Cross multiply
    85,021.10x = 127,527.60 × 28,855.70
  4. Step 4: Simplify right side
    85,021.10x = 3,679,898,167.32
  5. Step 5: Solve for x
    x = 3,679,898,167.32/85,021.10
  6. Step 6: Final answer
    x = 43,282.18

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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.