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Finding the Fourth Proportional to 66,551.51, 91,838.45 and 36,338.10

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Solution

The fourth proportional to 66,551.51, 91,838.45 and 36,338.10 is: 50,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.51 : 91,838.45 = 36,338.10 : x
  2. Step 2: Convert to fraction form
    66,551.51/91,838.45 = 36,338.10/x
  3. Step 3: Cross multiply
    66,551.51x = 91,838.45 × 36,338.10
  4. Step 4: Simplify right side
    66,551.51x = 3,337,234,598.25
  5. Step 5: Solve for x
    x = 3,337,234,598.25/66,551.51
  6. Step 6: Final answer
    x = 50,145.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.