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Finding the Fourth Proportional to 54,612.75, 75,360.80 and 30,411.89

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Solution

The fourth proportional to 54,612.75, 75,360.80 and 30,411.89 is: 41,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,612.75 : 75,360.80 = 30,411.89 : x
  2. Step 2: Convert to fraction form
    54,612.75/75,360.80 = 30,411.89/x
  3. Step 3: Cross multiply
    54,612.75x = 75,360.80 × 30,411.89
  4. Step 4: Simplify right side
    54,612.75x = 2,291,864,113.65
  5. Step 5: Solve for x
    x = 2,291,864,113.65/54,612.75
  6. Step 6: Final answer
    x = 41,965.73

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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.