Home / 39,145.09-53,945.65-38,425.34

Finding the Fourth Proportional to 39,145.09, 53,945.65 and 38,425.34

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Solution

The fourth proportional to 39,145.09, 53,945.65 and 38,425.34 is: 52,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,145.09 : 53,945.65 = 38,425.34 : x
  2. Step 2: Convert to fraction form
    39,145.09/53,945.65 = 38,425.34/x
  3. Step 3: Cross multiply
    39,145.09x = 53,945.65 × 38,425.34
  4. Step 4: Simplify right side
    39,145.09x = 2,072,879,942.77
  5. Step 5: Solve for x
    x = 2,072,879,942.77/39,145.09
  6. Step 6: Final answer
    x = 52,953.77

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1.5x scale

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.