Home / 66,453.20-99,689.75-21,459.52

Finding the Fourth Proportional to 66,453.20, 99,689.75 and 21,459.52

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Solution

The fourth proportional to 66,453.20, 99,689.75 and 21,459.52 is: 32,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453.20 : 99,689.75 = 21,459.52 : x
  2. Step 2: Convert to fraction form
    66,453.20/99,689.75 = 21,459.52/x
  3. Step 3: Cross multiply
    66,453.20x = 99,689.75 × 21,459.52
  4. Step 4: Simplify right side
    66,453.20x = 2,139,294,183.92
  5. Step 5: Solve for x
    x = 2,139,294,183.92/66,453.20
  6. Step 6: Final answer
    x = 32,192.49

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1.5x scale

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.