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Finding the Fourth Proportional to 51,209.91, 70,669.83 and 29,703.81

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Solution

The fourth proportional to 51,209.91, 70,669.83 and 29,703.81 is: 40,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,209.91 : 70,669.83 = 29,703.81 : x
  2. Step 2: Convert to fraction form
    51,209.91/70,669.83 = 29,703.81/x
  3. Step 3: Cross multiply
    51,209.91x = 70,669.83 × 29,703.81
  4. Step 4: Simplify right side
    51,209.91x = 2,099,163,203.05
  5. Step 5: Solve for x
    x = 2,099,163,203.05/51,209.91
  6. Step 6: Final answer
    x = 40,991.35

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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.