Home / 52,090.28-78,138.86-20,497.85

Finding the Fourth Proportional to 52,090.28, 78,138.86 and 20,497.85

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Solution

The fourth proportional to 52,090.28, 78,138.86 and 20,497.85 is: 30,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,090.28 : 78,138.86 = 20,497.85 : x
  2. Step 2: Convert to fraction form
    52,090.28/78,138.86 = 20,497.85/x
  3. Step 3: Cross multiply
    52,090.28x = 78,138.86 × 20,497.85
  4. Step 4: Simplify right side
    52,090.28x = 1,601,678,631.45
  5. Step 5: Solve for x
    x = 1,601,678,631.45/52,090.28
  6. Step 6: Final answer
    x = 30,748.13

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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.