Home / 85,154.20-117,516.42-47,428.45

Finding the Fourth Proportional to 85,154.20, 117,516.42 and 47,428.45

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Solution

The fourth proportional to 85,154.20, 117,516.42 and 47,428.45 is: 65,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,154.20 : 117,516.42 = 47,428.45 : x
  2. Step 2: Convert to fraction form
    85,154.20/117,516.42 = 47,428.45/x
  3. Step 3: Cross multiply
    85,154.20x = 117,516.42 × 47,428.45
  4. Step 4: Simplify right side
    85,154.20x = 5,573,621,650.15
  5. Step 5: Solve for x
    x = 5,573,621,650.15/85,154.20
  6. Step 6: Final answer
    x = 65,453.28

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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.