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Finding the Fourth Proportional to 51,555, 71,145.90 and 29,203.32

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Solution

The fourth proportional to 51,555, 71,145.90 and 29,203.32 is: 40,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,555 : 71,145.90 = 29,203.32 : x
  2. Step 2: Convert to fraction form
    51,555/71,145.90 = 29,203.32/x
  3. Step 3: Cross multiply
    51,555x = 71,145.90 × 29,203.32
  4. Step 4: Simplify right side
    51,555x = 2,077,696,484.39
  5. Step 5: Solve for x
    x = 2,077,696,484.39/51,555
  6. Step 6: Final answer
    x = 40,300.58

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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.