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Finding the Fourth Proportional to 72,997.40, 109,496.10 and 65,624.60

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Solution

The fourth proportional to 72,997.40, 109,496.10 and 65,624.60 is: 98,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,997.40 : 109,496.10 = 65,624.60 : x
  2. Step 2: Convert to fraction form
    72,997.40/109,496.10 = 65,624.60/x
  3. Step 3: Cross multiply
    72,997.40x = 109,496.10 × 65,624.60
  4. Step 4: Simplify right side
    72,997.40x = 7,185,637,764.06
  5. Step 5: Solve for x
    x = 7,185,637,764.06/72,997.40
  6. Step 6: Final answer
    x = 98,436.90

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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.