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Finding the Fourth Proportional to 66,218.80, 99,443.40 and 35,114.80

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Solution

The fourth proportional to 66,218.80, 99,443.40 and 35,114.80 is: 52,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,218.80 : 99,443.40 = 35,114.80 : x
  2. Step 2: Convert to fraction form
    66,218.80/99,443.40 = 35,114.80/x
  3. Step 3: Cross multiply
    66,218.80x = 99,443.40 × 35,114.80
  4. Step 4: Simplify right side
    66,218.80x = 3,491,935,102.32
  5. Step 5: Solve for x
    x = 3,491,935,102.32/66,218.80
  6. Step 6: Final answer
    x = 52,733.29

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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.