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Finding the Fourth Proportional to 51,423.87, 70,964.73 and 28,762.77

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Solution

The fourth proportional to 51,423.87, 70,964.73 and 28,762.77 is: 39,692.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,423.87 : 70,964.73 = 28,762.77 : x
  2. Step 2: Convert to fraction form
    51,423.87/70,964.73 = 28,762.77/x
  3. Step 3: Cross multiply
    51,423.87x = 70,964.73 × 28,762.77
  4. Step 4: Simplify right side
    51,423.87x = 2,041,142,207.10
  5. Step 5: Solve for x
    x = 2,041,142,207.10/51,423.87
  6. Step 6: Final answer
    x = 39,692.50

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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.