Home / 115,011.12-172,515.72-31,905.12

Finding the Fourth Proportional to 115,011.12, 172,515.72 and 31,905.12

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Solution

The fourth proportional to 115,011.12, 172,515.72 and 31,905.12 is: 47,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,011.12 : 172,515.72 = 31,905.12 : x
  2. Step 2: Convert to fraction form
    115,011.12/172,515.72 = 31,905.12/x
  3. Step 3: Cross multiply
    115,011.12x = 172,515.72 × 31,905.12
  4. Step 4: Simplify right side
    115,011.12x = 5,504,134,748.49
  5. Step 5: Solve for x
    x = 5,504,134,748.49/115,011.12
  6. Step 6: Final answer
    x = 47,857.41

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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.