Home / 66,399.06-99,598.43-20,810.25

Finding the Fourth Proportional to 66,399.06, 99,598.43 and 20,810.25

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Solution

The fourth proportional to 66,399.06, 99,598.43 and 20,810.25 is: 31,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.06 : 99,598.43 = 20,810.25 : x
  2. Step 2: Convert to fraction form
    66,399.06/99,598.43 = 20,810.25/x
  3. Step 3: Cross multiply
    66,399.06x = 99,598.43 × 20,810.25
  4. Step 4: Simplify right side
    66,399.06x = 2,072,668,162.88
  5. Step 5: Solve for x
    x = 2,072,668,162.88/66,399.06
  6. Step 6: Final answer
    x = 31,215.32

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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.