Home / 42,977.85-64,459.32-11,805.81

Finding the Fourth Proportional to 42,977.85, 64,459.32 and 11,805.81

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Solution

The fourth proportional to 42,977.85, 64,459.32 and 11,805.81 is: 17,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,977.85 : 64,459.32 = 11,805.81 : x
  2. Step 2: Convert to fraction form
    42,977.85/64,459.32 = 11,805.81/x
  3. Step 3: Cross multiply
    42,977.85x = 64,459.32 × 11,805.81
  4. Step 4: Simplify right side
    42,977.85x = 760,994,484.65
  5. Step 5: Solve for x
    x = 760,994,484.65/42,977.85
  6. Step 6: Final answer
    x = 17,706.67

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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.