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Finding the Fourth Proportional to 65,305.50, 90,123.03 and 35,497.50

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Solution

The fourth proportional to 65,305.50, 90,123.03 and 35,497.50 is: 48,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,305.50 : 90,123.03 = 35,497.50 : x
  2. Step 2: Convert to fraction form
    65,305.50/90,123.03 = 35,497.50/x
  3. Step 3: Cross multiply
    65,305.50x = 90,123.03 × 35,497.50
  4. Step 4: Simplify right side
    65,305.50x = 3,199,142,257.43
  5. Step 5: Solve for x
    x = 3,199,142,257.43/65,305.50
  6. Step 6: Final answer
    x = 48,987.33

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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.