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Finding the Fourth Proportional to 50,498.88, 69,688.80 and 28,144.32

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Solution

The fourth proportional to 50,498.88, 69,688.80 and 28,144.32 is: 38,839.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,498.88 : 69,688.80 = 28,144.32 : x
  2. Step 2: Convert to fraction form
    50,498.88/69,688.80 = 28,144.32/x
  3. Step 3: Cross multiply
    50,498.88x = 69,688.80 × 28,144.32
  4. Step 4: Simplify right side
    50,498.88x = 1,961,343,887.62
  5. Step 5: Solve for x
    x = 1,961,343,887.62/50,498.88
  6. Step 6: Final answer
    x = 38,839.35

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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.