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Finding the Fourth Proportional to 49,777.88, 68,688.42 and 30,654.68

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Solution

The fourth proportional to 49,777.88, 68,688.42 and 30,654.68 is: 42,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,777.88 : 68,688.42 = 30,654.68 : x
  2. Step 2: Convert to fraction form
    49,777.88/68,688.42 = 30,654.68/x
  3. Step 3: Cross multiply
    49,777.88x = 68,688.42 × 30,654.68
  4. Step 4: Simplify right side
    49,777.88x = 2,105,621,534.81
  5. Step 5: Solve for x
    x = 2,105,621,534.81/49,777.88
  6. Step 6: Final answer
    x = 42,300.35

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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.