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Finding the Fourth Proportional to 54,805.52, 75,633.72 and 30,931.67

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Solution

The fourth proportional to 54,805.52, 75,633.72 and 30,931.67 is: 42,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,805.52 : 75,633.72 = 30,931.67 : x
  2. Step 2: Convert to fraction form
    54,805.52/75,633.72 = 30,931.67/x
  3. Step 3: Cross multiply
    54,805.52x = 75,633.72 × 30,931.67
  4. Step 4: Simplify right side
    54,805.52x = 2,339,476,889.74
  5. Step 5: Solve for x
    x = 2,339,476,889.74/54,805.52
  6. Step 6: Final answer
    x = 42,686.89

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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.