Home / 51,429.12-70,972.32-28,768.50

Finding the Fourth Proportional to 51,429.12, 70,972.32 and 28,768.50

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Solution

The fourth proportional to 51,429.12, 70,972.32 and 28,768.50 is: 39,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,429.12 : 70,972.32 = 28,768.50 : x
  2. Step 2: Convert to fraction form
    51,429.12/70,972.32 = 28,768.50/x
  3. Step 3: Cross multiply
    51,429.12x = 70,972.32 × 28,768.50
  4. Step 4: Simplify right side
    51,429.12x = 2,041,767,187.92
  5. Step 5: Solve for x
    x = 2,041,767,187.92/51,429.12
  6. Step 6: Final answer
    x = 39,700.61

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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.