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Finding the Fourth Proportional to 38,013.80, 57,020.70 and 31,101.80

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Solution

The fourth proportional to 38,013.80, 57,020.70 and 31,101.80 is: 46,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,013.80 : 57,020.70 = 31,101.80 : x
  2. Step 2: Convert to fraction form
    38,013.80/57,020.70 = 31,101.80/x
  3. Step 3: Cross multiply
    38,013.80x = 57,020.70 × 31,101.80
  4. Step 4: Simplify right side
    38,013.80x = 1,773,446,407.26
  5. Step 5: Solve for x
    x = 1,773,446,407.26/38,013.80
  6. Step 6: Final answer
    x = 46,652.70

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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.