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Finding the Fourth Proportional to 45,345.80, 68,018.70 and 32,904.20

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Solution

The fourth proportional to 45,345.80, 68,018.70 and 32,904.20 is: 49,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,345.80 : 68,018.70 = 32,904.20 : x
  2. Step 2: Convert to fraction form
    45,345.80/68,018.70 = 32,904.20/x
  3. Step 3: Cross multiply
    45,345.80x = 68,018.70 × 32,904.20
  4. Step 4: Simplify right side
    45,345.80x = 2,238,100,908.54
  5. Step 5: Solve for x
    x = 2,238,100,908.54/45,345.80
  6. Step 6: Final answer
    x = 49,356.30

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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.