Home / 115,037.78-172,556.70-31,931.78

Finding the Fourth Proportional to 115,037.78, 172,556.70 and 31,931.78

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Solution

The fourth proportional to 115,037.78, 172,556.70 and 31,931.78 is: 47,897.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,037.78 : 172,556.70 = 31,931.78 : x
  2. Step 2: Convert to fraction form
    115,037.78/172,556.70 = 31,931.78/x
  3. Step 3: Cross multiply
    115,037.78x = 172,556.70 × 31,931.78
  4. Step 4: Simplify right side
    115,037.78x = 5,510,042,581.93
  5. Step 5: Solve for x
    x = 5,510,042,581.93/115,037.78
  6. Step 6: Final answer
    x = 47,897.68

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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.