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Finding the Fourth Proportional to 90,823.68, 125,067.06 and 65,285.01

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Solution

The fourth proportional to 90,823.68, 125,067.06 and 65,285.01 is: 89,899.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.68 : 125,067.06 = 65,285.01 : x
  2. Step 2: Convert to fraction form
    90,823.68/125,067.06 = 65,285.01/x
  3. Step 3: Cross multiply
    90,823.68x = 125,067.06 × 65,285.01
  4. Step 4: Simplify right side
    90,823.68x = 8,165,004,262.77
  5. Step 5: Solve for x
    x = 8,165,004,262.77/90,823.68
  6. Step 6: Final answer
    x = 89,899.51

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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.