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Finding the Fourth Proportional to 93,251.25, 128,686.73 and 50,809.78

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Solution

The fourth proportional to 93,251.25, 128,686.73 and 50,809.78 is: 70,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,251.25 : 128,686.73 = 50,809.78 : x
  2. Step 2: Convert to fraction form
    93,251.25/128,686.73 = 50,809.78/x
  3. Step 3: Cross multiply
    93,251.25x = 128,686.73 × 50,809.78
  4. Step 4: Simplify right side
    93,251.25x = 6,538,544,347.03
  5. Step 5: Solve for x
    x = 6,538,544,347.03/93,251.25
  6. Step 6: Final answer
    x = 70,117.50

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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.