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Finding the Fourth Proportional to 66,604.36, 99,955.80 and 31,544.08

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Solution

The fourth proportional to 66,604.36, 99,955.80 and 31,544.08 is: 47,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,604.36 : 99,955.80 = 31,544.08 : x
  2. Step 2: Convert to fraction form
    66,604.36/99,955.80 = 31,544.08/x
  3. Step 3: Cross multiply
    66,604.36x = 99,955.80 × 31,544.08
  4. Step 4: Simplify right side
    66,604.36x = 3,153,013,751.66
  5. Step 5: Solve for x
    x = 3,153,013,751.66/66,604.36
  6. Step 6: Final answer
    x = 47,339.45

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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.