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Finding the Fourth Proportional to 30,660.80, 45,955.20 and 30,332.48

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Solution

The fourth proportional to 30,660.80, 45,955.20 and 30,332.48 is: 45,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.80 : 45,955.20 = 30,332.48 : x
  2. Step 2: Convert to fraction form
    30,660.80/45,955.20 = 30,332.48/x
  3. Step 3: Cross multiply
    30,660.80x = 45,955.20 × 30,332.48
  4. Step 4: Simplify right side
    30,660.80x = 1,393,935,184.90
  5. Step 5: Solve for x
    x = 1,393,935,184.90/30,660.80
  6. Step 6: Final answer
    x = 45,463.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.