Home / 66,422.40-99,621.30-19,664.16

Finding the Fourth Proportional to 66,422.40, 99,621.30 and 19,664.16

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Solution

The fourth proportional to 66,422.40, 99,621.30 and 19,664.16 is: 29,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.40 : 99,621.30 = 19,664.16 : x
  2. Step 2: Convert to fraction form
    66,422.40/99,621.30 = 19,664.16/x
  3. Step 3: Cross multiply
    66,422.40x = 99,621.30 × 19,664.16
  4. Step 4: Simplify right side
    66,422.40x = 1,958,969,182.61
  5. Step 5: Solve for x
    x = 1,958,969,182.61/66,422.40
  6. Step 6: Final answer
    x = 29,492.60

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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.