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Finding the Fourth Proportional to 70,808.88, 97,725.60 and 45,731.28

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Solution

The fourth proportional to 70,808.88, 97,725.60 and 45,731.28 is: 63,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.88 : 97,725.60 = 45,731.28 : x
  2. Step 2: Convert to fraction form
    70,808.88/97,725.60 = 45,731.28/x
  3. Step 3: Cross multiply
    70,808.88x = 97,725.60 × 45,731.28
  4. Step 4: Simplify right side
    70,808.88x = 4,469,116,776.77
  5. Step 5: Solve for x
    x = 4,469,116,776.77/70,808.88
  6. Step 6: Final answer
    x = 63,115.20

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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.