Home / 51,856.40-77,786.20-20,265.12

Finding the Fourth Proportional to 51,856.40, 77,786.20 and 20,265.12

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Solution

The fourth proportional to 51,856.40, 77,786.20 and 20,265.12 is: 30,398.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,856.40 : 77,786.20 = 20,265.12 : x
  2. Step 2: Convert to fraction form
    51,856.40/77,786.20 = 20,265.12/x
  3. Step 3: Cross multiply
    51,856.40x = 77,786.20 × 20,265.12
  4. Step 4: Simplify right side
    51,856.40x = 1,576,346,677.34
  5. Step 5: Solve for x
    x = 1,576,346,677.34/51,856.40
  6. Step 6: Final answer
    x = 30,398.31

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1.5x scale

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.