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Finding the Fourth Proportional to 66,670.62, 99,890.73 and 35,411.10

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Solution

The fourth proportional to 66,670.62, 99,890.73 and 35,411.10 is: 53,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,670.62 : 99,890.73 = 35,411.10 : x
  2. Step 2: Convert to fraction form
    66,670.62/99,890.73 = 35,411.10/x
  3. Step 3: Cross multiply
    66,670.62x = 99,890.73 × 35,411.10
  4. Step 4: Simplify right side
    66,670.62x = 3,537,240,629.10
  5. Step 5: Solve for x
    x = 3,537,240,629.10/66,670.62
  6. Step 6: Final answer
    x = 53,055.46

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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.