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Finding the Fourth Proportional to 38,008.80, 57,013.20 and 31,096.80

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Solution

The fourth proportional to 38,008.80, 57,013.20 and 31,096.80 is: 46,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,008.80 : 57,013.20 = 31,096.80 : x
  2. Step 2: Convert to fraction form
    38,008.80/57,013.20 = 31,096.80/x
  3. Step 3: Cross multiply
    38,008.80x = 57,013.20 × 31,096.80
  4. Step 4: Simplify right side
    38,008.80x = 1,772,928,077.76
  5. Step 5: Solve for x
    x = 1,772,928,077.76/38,008.80
  6. Step 6: Final answer
    x = 46,645.20

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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.