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Finding the Fourth Proportional to 50,898.50, 70,239.83 and 28,240.94

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Solution

The fourth proportional to 50,898.50, 70,239.83 and 28,240.94 is: 38,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,898.50 : 70,239.83 = 28,240.94 : x
  2. Step 2: Convert to fraction form
    50,898.50/70,239.83 = 28,240.94/x
  3. Step 3: Cross multiply
    50,898.50x = 70,239.83 × 28,240.94
  4. Step 4: Simplify right side
    50,898.50x = 1,983,638,332.24
  5. Step 5: Solve for x
    x = 1,983,638,332.24/50,898.50
  6. Step 6: Final answer
    x = 38,972.43

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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.