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Finding the Fourth Proportional to 50,899.50, 70,244.64 and 28,543.50

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Solution

The fourth proportional to 50,899.50, 70,244.64 and 28,543.50 is: 39,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,899.50 : 70,244.64 = 28,543.50 : x
  2. Step 2: Convert to fraction form
    50,899.50/70,244.64 = 28,543.50/x
  3. Step 3: Cross multiply
    50,899.50x = 70,244.64 × 28,543.50
  4. Step 4: Simplify right side
    50,899.50x = 2,005,027,881.84
  5. Step 5: Solve for x
    x = 2,005,027,881.84/50,899.50
  6. Step 6: Final answer
    x = 39,391.90

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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.