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Finding the Fourth Proportional to 70,838.72, 97,757.79 and 40,625.18

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Solution

The fourth proportional to 70,838.72, 97,757.79 and 40,625.18 is: 56,062.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,838.72 : 97,757.79 = 40,625.18 : x
  2. Step 2: Convert to fraction form
    70,838.72/97,757.79 = 40,625.18/x
  3. Step 3: Cross multiply
    70,838.72x = 97,757.79 × 40,625.18
  4. Step 4: Simplify right side
    70,838.72x = 3,971,427,815.15
  5. Step 5: Solve for x
    x = 3,971,427,815.15/70,838.72
  6. Step 6: Final answer
    x = 56,062.95

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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.