Home / 39,515.76-54,551.56-30,542.96

Finding the Fourth Proportional to 39,515.76, 54,551.56 and 30,542.96

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Solution

The fourth proportional to 39,515.76, 54,551.56 and 30,542.96 is: 42,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,515.76 : 54,551.56 = 30,542.96 : x
  2. Step 2: Convert to fraction form
    39,515.76/54,551.56 = 30,542.96/x
  3. Step 3: Cross multiply
    39,515.76x = 54,551.56 × 30,542.96
  4. Step 4: Simplify right side
    39,515.76x = 1,666,166,115.02
  5. Step 5: Solve for x
    x = 1,666,166,115.02/39,515.76
  6. Step 6: Final answer
    x = 42,164.60

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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.