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Finding the Fourth Proportional to 65,723.80, 90,708.24 and 37,432.12

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Solution

The fourth proportional to 65,723.80, 90,708.24 and 37,432.12 is: 51,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,723.80 : 90,708.24 = 37,432.12 : x
  2. Step 2: Convert to fraction form
    65,723.80/90,708.24 = 37,432.12/x
  3. Step 3: Cross multiply
    65,723.80x = 90,708.24 × 37,432.12
  4. Step 4: Simplify right side
    65,723.80x = 3,395,401,724.67
  5. Step 5: Solve for x
    x = 3,395,401,724.67/65,723.80
  6. Step 6: Final answer
    x = 51,661.68

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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.