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Finding the Fourth Proportional to 65,245.74, 90,034.86 and 38,383.07

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Solution

The fourth proportional to 65,245.74, 90,034.86 and 38,383.07 is: 52,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,245.74 : 90,034.86 = 38,383.07 : x
  2. Step 2: Convert to fraction form
    65,245.74/90,034.86 = 38,383.07/x
  3. Step 3: Cross multiply
    65,245.74x = 90,034.86 × 38,383.07
  4. Step 4: Simplify right side
    65,245.74x = 3,455,813,883.65
  5. Step 5: Solve for x
    x = 3,455,813,883.65/65,245.74
  6. Step 6: Final answer
    x = 52,966.12

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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.