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Finding the Fourth Proportional to 91,290.39, 136,822.55 and 51,727.56

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Solution

The fourth proportional to 91,290.39, 136,822.55 and 51,727.56 is: 77,527.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,290.39 : 136,822.55 = 51,727.56 : x
  2. Step 2: Convert to fraction form
    91,290.39/136,822.55 = 51,727.56/x
  3. Step 3: Cross multiply
    91,290.39x = 136,822.55 × 51,727.56
  4. Step 4: Simplify right side
    91,290.39x = 7,077,496,405.84
  5. Step 5: Solve for x
    x = 7,077,496,405.84/91,290.39
  6. Step 6: Final answer
    x = 77,527.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.