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Finding the Fourth Proportional to 63,143.56, 87,138.29 and 34,463.48

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Solution

The fourth proportional to 63,143.56, 87,138.29 and 34,463.48 is: 47,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,143.56 : 87,138.29 = 34,463.48 : x
  2. Step 2: Convert to fraction form
    63,143.56/87,138.29 = 34,463.48/x
  3. Step 3: Cross multiply
    63,143.56x = 87,138.29 × 34,463.48
  4. Step 4: Simplify right side
    63,143.56x = 3,003,088,714.65
  5. Step 5: Solve for x
    x = 3,003,088,714.65/63,143.56
  6. Step 6: Final answer
    x = 47,559.70

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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.