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Finding the Fourth Proportional to 74,726.78, 103,151.75 and 54,742.39

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Solution

The fourth proportional to 74,726.78, 103,151.75 and 54,742.39 is: 75,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,726.78 : 103,151.75 = 54,742.39 : x
  2. Step 2: Convert to fraction form
    74,726.78/103,151.75 = 54,742.39/x
  3. Step 3: Cross multiply
    74,726.78x = 103,151.75 × 54,742.39
  4. Step 4: Simplify right side
    74,726.78x = 5,646,772,796.09
  5. Step 5: Solve for x
    x = 5,646,772,796.09/74,726.78
  6. Step 6: Final answer
    x = 75,565.58

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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.