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Finding the Fourth Proportional to 75,094.49, 103,630.13 and 40,639.16

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Solution

The fourth proportional to 75,094.49, 103,630.13 and 40,639.16 is: 56,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,094.49 : 103,630.13 = 40,639.16 : x
  2. Step 2: Convert to fraction form
    75,094.49/103,630.13 = 40,639.16/x
  3. Step 3: Cross multiply
    75,094.49x = 103,630.13 × 40,639.16
  4. Step 4: Simplify right side
    75,094.49x = 4,211,440,712.54
  5. Step 5: Solve for x
    x = 4,211,440,712.54/75,094.49
  6. Step 6: Final answer
    x = 56,081.89

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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.