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Finding the Fourth Proportional to 50,901, 70,243.38 and 28,545

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Solution

The fourth proportional to 50,901, 70,243.38 and 28,545 is: 39,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,901 : 70,243.38 = 28,545 : x
  2. Step 2: Convert to fraction form
    50,901/70,243.38 = 28,545/x
  3. Step 3: Cross multiply
    50,901x = 70,243.38 × 28,545
  4. Step 4: Simplify right side
    50,901x = 2,005,097,282.10
  5. Step 5: Solve for x
    x = 2,005,097,282.10/50,901
  6. Step 6: Final answer
    x = 39,392.10

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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.