Home / 66,762.23-100,155.69-21,181.50

Finding the Fourth Proportional to 66,762.23, 100,155.69 and 21,181.50

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Solution

The fourth proportional to 66,762.23, 100,155.69 and 21,181.50 is: 31,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,762.23 : 100,155.69 = 21,181.50 : x
  2. Step 2: Convert to fraction form
    66,762.23/100,155.69 = 21,181.50/x
  3. Step 3: Cross multiply
    66,762.23x = 100,155.69 × 21,181.50
  4. Step 4: Simplify right side
    66,762.23x = 2,121,447,747.74
  5. Step 5: Solve for x
    x = 2,121,447,747.74/66,762.23
  6. Step 6: Final answer
    x = 31,776.17

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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.