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Finding the Fourth Proportional to 31,167.40, 46,751.10 and 10,107.40

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Solution

The fourth proportional to 31,167.40, 46,751.10 and 10,107.40 is: 15,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,167.40 : 46,751.10 = 10,107.40 : x
  2. Step 2: Convert to fraction form
    31,167.40/46,751.10 = 10,107.40/x
  3. Step 3: Cross multiply
    31,167.40x = 46,751.10 × 10,107.40
  4. Step 4: Simplify right side
    31,167.40x = 472,532,068.14
  5. Step 5: Solve for x
    x = 472,532,068.14/31,167.40
  6. Step 6: Final answer
    x = 15,161.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.