Home / 66,375.85-99,526.87-21,978.39

Finding the Fourth Proportional to 66,375.85, 99,526.87 and 21,978.39

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Solution

The fourth proportional to 66,375.85, 99,526.87 and 21,978.39 is: 32,955.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,375.85 : 99,526.87 = 21,978.39 : x
  2. Step 2: Convert to fraction form
    66,375.85/99,526.87 = 21,978.39/x
  3. Step 3: Cross multiply
    66,375.85x = 99,526.87 × 21,978.39
  4. Step 4: Simplify right side
    66,375.85x = 2,187,440,364.34
  5. Step 5: Solve for x
    x = 2,187,440,364.34/66,375.85
  6. Step 6: Final answer
    x = 32,955.37

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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.