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Finding the Fourth Proportional to 70,638.65, 97,481.22 and 38,807.57

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Solution

The fourth proportional to 70,638.65, 97,481.22 and 38,807.57 is: 53,554.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,638.65 : 97,481.22 = 38,807.57 : x
  2. Step 2: Convert to fraction form
    70,638.65/97,481.22 = 38,807.57/x
  3. Step 3: Cross multiply
    70,638.65x = 97,481.22 × 38,807.57
  4. Step 4: Simplify right side
    70,638.65x = 3,783,009,585.30
  5. Step 5: Solve for x
    x = 3,783,009,585.30/70,638.65
  6. Step 6: Final answer
    x = 53,554.39

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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.