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Finding the Fourth Proportional to 66,352.12, 99,476.28 and 45,239.80

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Solution

The fourth proportional to 66,352.12, 99,476.28 and 45,239.80 is: 67,824.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,352.12 : 99,476.28 = 45,239.80 : x
  2. Step 2: Convert to fraction form
    66,352.12/99,476.28 = 45,239.80/x
  3. Step 3: Cross multiply
    66,352.12x = 99,476.28 × 45,239.80
  4. Step 4: Simplify right side
    66,352.12x = 4,500,287,011.94
  5. Step 5: Solve for x
    x = 4,500,287,011.94/66,352.12
  6. Step 6: Final answer
    x = 67,824.31

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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.