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Finding the Fourth Proportional to 74,900.62, 103,363.65 and 40,910.08

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Solution

The fourth proportional to 74,900.62, 103,363.65 and 40,910.08 is: 56,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,900.62 : 103,363.65 = 40,910.08 : x
  2. Step 2: Convert to fraction form
    74,900.62/103,363.65 = 40,910.08/x
  3. Step 3: Cross multiply
    74,900.62x = 103,363.65 × 40,910.08
  4. Step 4: Simplify right side
    74,900.62x = 4,228,615,190.59
  5. Step 5: Solve for x
    x = 4,228,615,190.59/74,900.62
  6. Step 6: Final answer
    x = 56,456.34

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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.