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Finding the Fourth Proportional to 54,581.04, 75,321 and 30,707.64

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Solution

The fourth proportional to 54,581.04, 75,321 and 30,707.64 is: 42,376.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,581.04 : 75,321 = 30,707.64 : x
  2. Step 2: Convert to fraction form
    54,581.04/75,321 = 30,707.64/x
  3. Step 3: Cross multiply
    54,581.04x = 75,321 × 30,707.64
  4. Step 4: Simplify right side
    54,581.04x = 2,312,930,152.44
  5. Step 5: Solve for x
    x = 2,312,930,152.44/54,581.04
  6. Step 6: Final answer
    x = 42,376.07

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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.