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Finding the Fourth Proportional to 70,583.78, 97,405.80 and 38,754.74

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Solution

The fourth proportional to 70,583.78, 97,405.80 and 38,754.74 is: 53,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,583.78 : 97,405.80 = 38,754.74 : x
  2. Step 2: Convert to fraction form
    70,583.78/97,405.80 = 38,754.74/x
  3. Step 3: Cross multiply
    70,583.78x = 97,405.80 × 38,754.74
  4. Step 4: Simplify right side
    70,583.78x = 3,774,936,355.31
  5. Step 5: Solve for x
    x = 3,774,936,355.31/70,583.78
  6. Step 6: Final answer
    x = 53,481.64

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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.