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Finding the Fourth Proportional to 70,686.72, 97,549.92 and 38,856.96

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Solution

The fourth proportional to 70,686.72, 97,549.92 and 38,856.96 is: 53,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.72 : 97,549.92 = 38,856.96 : x
  2. Step 2: Convert to fraction form
    70,686.72/97,549.92 = 38,856.96/x
  3. Step 3: Cross multiply
    70,686.72x = 97,549.92 × 38,856.96
  4. Step 4: Simplify right side
    70,686.72x = 3,790,493,339.44
  5. Step 5: Solve for x
    x = 3,790,493,339.44/70,686.72
  6. Step 6: Final answer
    x = 53,623.84

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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.