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Finding the Fourth Proportional to 90,299.66, 124,614.47 and 54,482.75

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Solution

The fourth proportional to 90,299.66, 124,614.47 and 54,482.75 is: 75,186.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,299.66 : 124,614.47 = 54,482.75 : x
  2. Step 2: Convert to fraction form
    90,299.66/124,614.47 = 54,482.75/x
  3. Step 3: Cross multiply
    90,299.66x = 124,614.47 × 54,482.75
  4. Step 4: Simplify right side
    90,299.66x = 6,789,338,742.98
  5. Step 5: Solve for x
    x = 6,789,338,742.98/90,299.66
  6. Step 6: Final answer
    x = 75,186.76

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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.