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Finding the Fourth Proportional to 61,107.72, 91,684.86 and 31,506.67

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Solution

The fourth proportional to 61,107.72, 91,684.86 and 31,506.67 is: 47,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.72 : 91,684.86 = 31,506.67 : x
  2. Step 2: Convert to fraction form
    61,107.72/91,684.86 = 31,506.67/x
  3. Step 3: Cross multiply
    61,107.72x = 91,684.86 × 31,506.67
  4. Step 4: Simplify right side
    61,107.72x = 2,888,684,628.02
  5. Step 5: Solve for x
    x = 2,888,684,628.02/61,107.72
  6. Step 6: Final answer
    x = 47,272.01

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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.