Home / 42,765.12-63,721.44-38,109.60

Finding the Fourth Proportional to 42,765.12, 63,721.44 and 38,109.60

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Solution

The fourth proportional to 42,765.12, 63,721.44 and 38,109.60 is: 56,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,765.12 : 63,721.44 = 38,109.60 : x
  2. Step 2: Convert to fraction form
    42,765.12/63,721.44 = 38,109.60/x
  3. Step 3: Cross multiply
    42,765.12x = 63,721.44 × 38,109.60
  4. Step 4: Simplify right side
    42,765.12x = 2,428,398,589.82
  5. Step 5: Solve for x
    x = 2,428,398,589.82/42,765.12
  6. Step 6: Final answer
    x = 56,784.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.