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Finding the Fourth Proportional to 63,416.80, 87,516.64 and 34,739.20

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Solution

The fourth proportional to 63,416.80, 87,516.64 and 34,739.20 is: 47,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,416.80 : 87,516.64 = 34,739.20 : x
  2. Step 2: Convert to fraction form
    63,416.80/87,516.64 = 34,739.20/x
  3. Step 3: Cross multiply
    63,416.80x = 87,516.64 × 34,739.20
  4. Step 4: Simplify right side
    63,416.80x = 3,040,258,060.29
  5. Step 5: Solve for x
    x = 3,040,258,060.29/63,416.80
  6. Step 6: Final answer
    x = 47,940.89

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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.