Home / 85,902.56-128,748.08-40,947.56

Finding the Fourth Proportional to 85,902.56, 128,748.08 and 40,947.56

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Solution

The fourth proportional to 85,902.56, 128,748.08 and 40,947.56 is: 61,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,902.56 : 128,748.08 = 40,947.56 : x
  2. Step 2: Convert to fraction form
    85,902.56/128,748.08 = 40,947.56/x
  3. Step 3: Cross multiply
    85,902.56x = 128,748.08 × 40,947.56
  4. Step 4: Simplify right side
    85,902.56x = 5,271,919,730.68
  5. Step 5: Solve for x
    x = 5,271,919,730.68/85,902.56
  6. Step 6: Final answer
    x = 61,370.93

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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.