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Finding the Fourth Proportional to 38,475.20, 54,020.80 and 38,475.20

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Solution

The fourth proportional to 38,475.20, 54,020.80 and 38,475.20 is: 54,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,475.20 : 54,020.80 = 38,475.20 : x
  2. Step 2: Convert to fraction form
    38,475.20/54,020.80 = 38,475.20/x
  3. Step 3: Cross multiply
    38,475.20x = 54,020.80 × 38,475.20
  4. Step 4: Simplify right side
    38,475.20x = 2,078,461,084.16
  5. Step 5: Solve for x
    x = 2,078,461,084.16/38,475.20
  6. Step 6: Final answer
    x = 54,020.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.