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Finding the Fourth Proportional to 90,406.08, 124,760.25 and 54,589.08

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Solution

The fourth proportional to 90,406.08, 124,760.25 and 54,589.08 is: 75,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,406.08 : 124,760.25 = 54,589.08 : x
  2. Step 2: Convert to fraction form
    90,406.08/124,760.25 = 54,589.08/x
  3. Step 3: Cross multiply
    90,406.08x = 124,760.25 × 54,589.08
  4. Step 4: Simplify right side
    90,406.08x = 6,810,547,268.07
  5. Step 5: Solve for x
    x = 6,810,547,268.07/90,406.08
  6. Step 6: Final answer
    x = 75,332.85

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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.