Home / 65,680.09-98,534.55-21,311.32

Finding the Fourth Proportional to 65,680.09, 98,534.55 and 21,311.32

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Solution

The fourth proportional to 65,680.09, 98,534.55 and 21,311.32 is: 31,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.09 : 98,534.55 = 21,311.32 : x
  2. Step 2: Convert to fraction form
    65,680.09/98,534.55 = 21,311.32/x
  3. Step 3: Cross multiply
    65,680.09x = 98,534.55 × 21,311.32
  4. Step 4: Simplify right side
    65,680.09x = 2,099,901,326.11
  5. Step 5: Solve for x
    x = 2,099,901,326.11/65,680.09
  6. Step 6: Final answer
    x = 31,971.66

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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.