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Finding the Fourth Proportional to 55,509.71, 76,601.50 and 31,644.07

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Solution

The fourth proportional to 55,509.71, 76,601.50 and 31,644.07 is: 43,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,509.71 : 76,601.50 = 31,644.07 : x
  2. Step 2: Convert to fraction form
    55,509.71/76,601.50 = 31,644.07/x
  3. Step 3: Cross multiply
    55,509.71x = 76,601.50 × 31,644.07
  4. Step 4: Simplify right side
    55,509.71x = 2,423,982,957.49
  5. Step 5: Solve for x
    x = 2,423,982,957.49/55,509.71
  6. Step 6: Final answer
    x = 43,667.73

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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.