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Finding the Fourth Proportional to 70,645.30, 97,490.11 and 38,379.64

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Solution

The fourth proportional to 70,645.30, 97,490.11 and 38,379.64 is: 52,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,645.30 : 97,490.11 = 38,379.64 : x
  2. Step 2: Convert to fraction form
    70,645.30/97,490.11 = 38,379.64/x
  3. Step 3: Cross multiply
    70,645.30x = 97,490.11 × 38,379.64
  4. Step 4: Simplify right side
    70,645.30x = 3,741,635,325.36
  5. Step 5: Solve for x
    x = 3,741,635,325.36/70,645.30
  6. Step 6: Final answer
    x = 52,963.68

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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.