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Finding the Fourth Proportional to 74,257.58, 102,480.89 and 42,425.79

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Solution

The fourth proportional to 74,257.58, 102,480.89 and 42,425.79 is: 58,550.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,257.58 : 102,480.89 = 42,425.79 : x
  2. Step 2: Convert to fraction form
    74,257.58/102,480.89 = 42,425.79/x
  3. Step 3: Cross multiply
    74,257.58x = 102,480.89 × 42,425.79
  4. Step 4: Simplify right side
    74,257.58x = 4,347,832,506.02
  5. Step 5: Solve for x
    x = 4,347,832,506.02/74,257.58
  6. Step 6: Final answer
    x = 58,550.69

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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.