Home / 31,688.20-47,532.30-30,230.20

Finding the Fourth Proportional to 31,688.20, 47,532.30 and 30,230.20

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Solution

The fourth proportional to 31,688.20, 47,532.30 and 30,230.20 is: 45,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.20 : 47,532.30 = 30,230.20 : x
  2. Step 2: Convert to fraction form
    31,688.20/47,532.30 = 30,230.20/x
  3. Step 3: Cross multiply
    31,688.20x = 47,532.30 × 30,230.20
  4. Step 4: Simplify right side
    31,688.20x = 1,436,910,935.46
  5. Step 5: Solve for x
    x = 1,436,910,935.46/31,688.20
  6. Step 6: Final answer
    x = 45,345.30

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1.5x scale

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.