Home / 52,320.96-78,485.28-21,155.52

Finding the Fourth Proportional to 52,320.96, 78,485.28 and 21,155.52

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Solution

The fourth proportional to 52,320.96, 78,485.28 and 21,155.52 is: 31,734.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,320.96 : 78,485.28 = 21,155.52 : x
  2. Step 2: Convert to fraction form
    52,320.96/78,485.28 = 21,155.52/x
  3. Step 3: Cross multiply
    52,320.96x = 78,485.28 × 21,155.52
  4. Step 4: Simplify right side
    52,320.96x = 1,660,396,910.75
  5. Step 5: Solve for x
    x = 1,660,396,910.75/52,320.96
  6. Step 6: Final answer
    x = 31,734.83

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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.