Home / 51,379.12-77,101.08-20,210.32

Finding the Fourth Proportional to 51,379.12, 77,101.08 and 20,210.32

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Solution

The fourth proportional to 51,379.12, 77,101.08 and 20,210.32 is: 30,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,379.12 : 77,101.08 = 20,210.32 : x
  2. Step 2: Convert to fraction form
    51,379.12/77,101.08 = 20,210.32/x
  3. Step 3: Cross multiply
    51,379.12x = 77,101.08 × 20,210.32
  4. Step 4: Simplify right side
    51,379.12x = 1,558,237,499.15
  5. Step 5: Solve for x
    x = 1,558,237,499.15/51,379.12
  6. Step 6: Final answer
    x = 30,328.22

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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.