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Finding the Fourth Proportional to 51,689.87, 71,333.74 and 29,032.86

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Solution

The fourth proportional to 51,689.87, 71,333.74 and 29,032.86 is: 40,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,689.87 : 71,333.74 = 29,032.86 : x
  2. Step 2: Convert to fraction form
    51,689.87/71,333.74 = 29,032.86/x
  3. Step 3: Cross multiply
    51,689.87x = 71,333.74 × 29,032.86
  4. Step 4: Simplify right side
    51,689.87x = 2,071,022,486.70
  5. Step 5: Solve for x
    x = 2,071,022,486.70/51,689.87
  6. Step 6: Final answer
    x = 40,066.31

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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.